catflap.org Online Dictionary Query

  Sink \Sink\ (s[i^][ng]k), n.
     1. A drain to carry off filthy water; a jakes.
        [1913 Webster]
  
     2. A shallow box or vessel of wood, stone, iron, or other
        material, connected with a drain, and used for receiving
        filthy water, etc., as in a kitchen.
        [1913 Webster]
  
     3. A hole or low place in land or rock, where waters sink and
        are lost; -- called also sink hole. [U. S.]
        [1913 Webster]
  
     4. The lowest part of a natural hollow or closed basin whence
        the water of one or more streams escapes by evaporation;
        as, the sink of the Humboldt River. [Western U. S.]
        [Webster 1913 Suppl.]
  
     Sink hole.
        (a) The opening to a sink drain.
        (b) A cesspool.
        (c) Same as Sink, n., 3.
            [1913 Webster]

  Sink \Sink\, n.
     1. A drain to carry off filthy water; a jakes.
  
     2. A shallow box or vessel of wood, stone, iron, or other
        material, connected with a drain, and used for receiving
        filthy water, etc., as in a kitchen.
  
     3. A hole or low place in land or rock, where waters sink and
        are lost; -- called also sink hole. [U. S.]
  
     Sink hole.
        (a) The opening to a sink drain.
        (b) A cesspool.
        (c) Same as Sink, n., 3.

  sink hole
     n.
     (alternative form of en sinkhole)

  sink hole
     n.
     (alternative form of en sinkhole)

  sink hole
     n.
     (alternative form of en sinkhole)

  sink hole
     n.
     (alternative form of en sinkhole)

  sink hole /sˈɪŋk hˈəʊl/
  Einsturztrichter 
     Synonym: leach hole
  
   see: sink holes, leach holes