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9 definitions found
From The Collaborative International Dictionary of English v.0.44 : [ gcide ]
Poison \Poi"son\, n. [F. poison, in Old French also, a potion,
fr. L. potio a drink, draught, potion, a poisonous draught,
fr. potare to drink. See Potable, and cf. Potion.]
1. Any agent which, when introduced into the animal organism,
is capable of producing a morbid, noxious, or deadly
effect upon it; as, morphine is a deadly poison; the
poison of pestilential diseases.
[1913 Webster]
2. That which taints or destroys moral purity or health; as,
the poison of evil example; the poison of sin.
[1913 Webster]
Poison ash. (Bot.)
Amyris+({Amyris+balsamifera" rel="nofollow">(a) A tree of the genus Amyris ({Amyris balsamifera)
found in the West Indies, from the trunk of which a
black liquor distills, supposed to have poisonous
qualities.
(b) The poison sumac ({Rhus venenata). [U. S.]
Poison dogwood (Bot.), poison sumac.
Poison fang (Zo["o]l.), one of the superior maxillary teeth
of some species of serpents, which, besides having the
cavity for the pulp, is either perforated or grooved by a
longitudinal canal, at the lower end of which the duct of
the poison gland terminates. See Illust. under Fang.
Poison gland (Biol.), a gland, in animals or plants, which
secretes an acrid or venomous matter, that is conveyed
along an organ capable of inflicting a wound.
Poison hemlock (Bot.), a poisonous umbelliferous plant
({Conium maculatum). See Hemlock.
Poison ivy (Bot.), a poisonous climbing plant (formerly
Rhus Toxicodendron, or Rhus radicans, now classified
as Toxicodendron radicans) of North America. It is
common as a climbing vine, especially found on tree
trunks, or walls, or as a low, spreading vine or as a
shrub. As a low vine it grows well in lightly shaded
areas, recognizable by growing in clusters of three
leaves. Its leaves are trifoliate, rhombic-ovate, and
variously notched. Its form varies slightly from location
to location, leading to some speculation that it may
consist of more than one species. Many people are poisoned
by it, though some appear resistant to its effects.
Touching the leaves may leave a residue of an oil on the
skin, and if not washed off quickly, sensitive areas of
skin become reddened and develop multiple small blisters,
lasting for several days to several weeks, and causing a
persistent itch. The toxic reaction is due to an oil,
present in all parts of the plant except the pollen,
called urushiol, the active component of which is the
compound pentadecylacatechol. See Poison sumac. It is
related to poison oak, and is also called mercury.
Poison nut. (Bot.)
(a) Nux vomica.
(b) The tree which yields this seed ({Strychnos
Nuxvomica). It is found on the Malabar and Coromandel
coasts.
Poison oak (Bot.), a dermatitis-producing plant often
lumped together with the poison ivy ({Toxicodendron
radicans) in common terminology, but more properly
distinguished as the more shrubby Toxicodendron
quercifolium (syn. Toxicodendron diversilobum), common
in California and Oregon. Opinion varies as to whether the
poison oak and poison ivy are only variants of a single
species. See poison ivy, above.
Poison sac. (Zo["o]l.) Same as Poison gland, above. See
Illust. under Fang.
Poison sumac (Bot.), a poisonous shrub formerly considered
Rhus+({Rhus+venenata" rel="nofollow">to be of the genus Rhus ({Rhus venenata), but now
classified as Toxicodendron vernix; -- also called
poison ash, poison dogwood, and poison elder. It has
pinnate leaves on graceful and slender common petioles,
and usually grows in swampy places. Both this plant and
the poison ivy ({Toxicodendron radicans, formerly Rhus
Toxicodendron) have clusters of smooth greenish white
berries, while the red-fruited species of this genus are
harmless. The tree ({Rhus vernicifera) which yields the
celebrated Japan lacquer is almost identical with the
poison sumac, and is also very poisonous. The juice of the
poison sumac also forms a lacquer similar to that of
Japan.
[1913 Webster +PJC]
Syn: Venom; virus; bane; pest; malignity.
Usage: Poison, Venom. Poison usually denotes something
received into the system by the mouth, breath, etc.
Venom is something discharged from animals and
received by means of a wound, as by the bite or sting
of serpents, scorpions, etc. Hence, venom specifically
implies some malignity of nature or purpose.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.44 : [ gcide ]
Ash \Ash\ ([a^]sh), n. [OE. asch, esh, AS. [ae]sc; akin to OHG.
asc, Sw. & Dan. ask, Icel. askr, D. esch, G. esche.]
1. (Bot.) A genus of trees of the Olive family, having
opposite pinnate leaves, many of the species furnishing
valuable timber, as the European ash ({Fraxinus
excelsior) and the white ash ({Fraxinus Americana}).
[1913 Webster]
Prickly+ash+({Zanthoxylum+Americanum" rel="nofollow">Prickly ash ({Zanthoxylum Americanum) and Poison ash
({Rhus venenata) are shrubs of different families,
somewhat resembling the true ashes in their foliage.
Mountain ash. See Roman tree, and under Mountain.
[1913 Webster]
2. The tough, elastic wood of the ash tree.
[1913 Webster]
Note: Ash is used adjectively, or as the first part of a
compound term; as, ash bud, ash wood, ash tree, etc.
[1913 Webster]
From Webster's Revised Unabridged Dictionary (1913) : [ web1913 ]
Poison \Poi"son\, n. [F. poison, in Old French also, a potion,
fr. L. potio a drink, draught, potion, a poisonous draught,
fr. potare to drink. See Potable, and cf. Potion.]
1. Any agent which, when introduced into the animal organism,
is capable of producing a morbid, noxious, or deadly
effect upon it; as, morphine is a deadly poison; the
poison of pestilential diseases.
2. That which taints or destroys moral purity or health; as,
the poison of evil example; the poison of sin.
Poison ash. (Bot.)
Amyris+({A.+balsamifera" rel="nofollow">(a) A tree of the genus Amyris ({A. balsamifera) found
in the West Indies, from the trunk of which a black
liquor distills, supposed to have poisonous qualities.
(b) The poison sumac ({Rhus venenata). [U. S.]
Poison dogwood (Bot.), poison sumac.
Poison fang (Zo["o]l.), one of the superior maxillary teeth
of some species of serpents, which, besides having the
cavity for the pulp, is either perforated or grooved by a
longitudinal canal, at the lower end of which the duct of
the poison gland terminates. See Illust. under Fang.
Poison gland (Biol.), a gland, in animals or plants, which
secretes an acrid or venomous matter, that is conveyed
along an organ capable of inflicting a wound.
Poison hemlock (Bot.), a poisonous umbelliferous plant
({Conium maculatum). See Hemlock.
Poison ivy (Bot.), a poisonous climbing plant ({Rhus
Toxicodendron) of North America. It is common on stone
walls and on the trunks of trees, and has trifoliate,
rhombic-ovate, variously notched leaves. Many people are
poisoned by it, if they touch the leaves. See Poison
sumac. Called also poison oak, and mercury.
Poison nut. (Bot.)
(a) Nux vomica.
(b) The tree which yields this seed ({Strychnos
Nuxvomica). It is found on the Malabar and Coromandel
coasts.
Poison oak (Bot.), the poison ivy; also, the more shrubby
Rhus diversiloba of California and Oregon.
Poison sac. (Zo["o]l.) Same as Poison gland, above. See
Illust. under Fang.
Poison sumac (Bot.), a poisonous shrub of the genus Rhus
({R. venenata); -- also called poison ash, poison
dogwood, and poison elder. It has pinnate leaves on
graceful and slender common petioles, and usually grows in
swampy places. Both this plant and the poison ivy ({Rhus
Toxicodendron) have clusters of smooth greenish white
berries, while the red-fruited species of this genus are
harmless. The tree ({Rhus vernicifera) which yields the
celebrated Japan lacquer is almost identical with the
poison sumac, and is also very poisonous. The juice of the
poison sumac also forms a lacquer similar to that of
Japan.
Syn: Venom; virus; bane; pest; malignity.
Usage: Poison, Venom. Poison usually denotes something
received into the system by the mouth, breath, etc.
Venom is something discharged from animals and
received by means of a wound, as by the bite or sting
of serpents, scorpions, etc. Hence, venom specifically
implies some malignity of nature or purpose.
From Webster's Revised Unabridged Dictionary (1913) : [ web1913 ]
Ash \Ash\ ([a^]sh), n. [OE. asch, esh, AS. [ae]sc; akin to OHG.
asc, Sw. & Dan. ask, Icel. askr, D. esch, G. esche.]
1. (Bot.) A genus of trees of the Olive family, having
opposite pinnate leaves, many of the species furnishing
valuable timber, as the European ash ({Fraxinus
excelsior) and the white ash ({F. Americana}).
Prickly+ash+({Zanthoxylum+Americanum" rel="nofollow">Prickly ash ({Zanthoxylum Americanum) and Poison ash
({Rhus venenata) are shrubs of different families,
somewhat resembling the true ashes in their foliage.
Mountain ash. See Roman tree, and under Mountain.
2. The tough, elastic wood of the ash tree.
Note: Ash is used adjectively, or as the first part of a
compound term; as, ash bud, ash wood, ash tree, etc.
From WordNet (r) 2.0 : [ wn ]
poison ash
n : smooth American swamp shrub with pinnate leaves and greenish
flowers followed by greenish white berries; yields an
irritating oil [syn: poison dogwood, poison sumac, Toxicodendron
vernix, Rhus vernix]
From English Wiktionary: All languages (2023-07-27) : [ dictinfo.com:wikt-en-ALL-2023-07-27 ]
poison ash
n.
The tree (taxlink Comocladia dodonaea species noshow=1), whose
exudate can cause contact dermatitis.
From English Wiktionary: English language only (2023-07-27) : [ dictinfo.com:wikt-en-en-2023-07-27 ]
poison ash
n.
The tree (taxlink Comocladia dodonaea species noshow=1), whose
exudate can cause contact dermatitis.
From English Wiktionary: Western, Greek, and Slavonic languages only (2023-07-27) : [ dictinfo.com:wikt-en-Western_Greek_Slavonic-2023-07-27 ]
poison ash
n.
The tree (taxlink Comocladia dodonaea species noshow=1), whose
exudate can cause contact dermatitis.
From English Wiktionary: Western languages only (2023-07-27) : [ dictinfo.com:wikt-en-Western-2023-07-27 ]
poison ash
n.
The tree (taxlink Comocladia dodonaea species noshow=1), whose
exudate can cause contact dermatitis.
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