catflap.org Online Dictionary Query

  elf
     n.
     1 (lb en Norse mythology) A luminous spirit presiding over nature and
  fertility and dwelling in the world of Álfheim (Elfland). Compare angel,
  nymph, fairy.
     2 Any from a race of mythical, supernatural beings resembling but
  seen as distinct from human beings. They are usually delicate-featured
  and skilled in magic or spellcrafting; sometimes depicted as clashing
  with dwarves, especially in modern fantasy literature.
     3 (lb en fantasy) Any of the magical, typically forest-guarding races
  bearing some similarities to the Norse álfar (through Tolkien's Eldar).
     4 A very diminutive person; a dwarf<ref>(R:Webster
  1913)</ref>.
     5 (lb en South Africa) The bluefish (''Pomatomus saltatrix'').
     vb.
     (lb en now rare) To twist into elflocks (of hair); to mat.

  ELF
     n.
     (lb en file format) (acronym of en executable Executable and linking
  Linking format Format nodot=1) (gloss: a common object file format for
  Unix)
     n.
     1 (initialism of en w:Earth Liberation Front nodot=1) (gloss: a
  radical environmentalism group)
     2 (initialism of en w:Elvish Linguistic Fellowship nodot=1)
  {gloss|an organization that studies the invented languages of (w: J. R.
  R. Tolkien)}
     3 (initialism of en w:Endangered Language Fund nodot=1) (gloss: a
  non-profit organization)