The Collaborative International Dictionary
Sink \Sink\ (s[i^][ng]k), n.
A drain to carry off filthy water; a jakes.
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.
A hole or low place in land or rock, where waters sink and are lost; -- called also sink hole. [U. S.]
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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.] Sink hole.
The opening to a sink drain.
A cesspool.
Same as Sink, n., 3.
Wiktionary
alt. (context geology English) A depression in the land formed from the collapse or erosion of the underlying rock or soil. n. (context geology English) A depression in the land formed from the collapse or erosion of the underlying rock or soil.
Usage examples of "sink hole".
The sink hole opened up with breathtaking quickness, and they were plunged into deep water, black as night.
If we didn't fall over a cliff or down a sink hole -- the area is full of them -- we might reach you before dark.
Caramon looked up in alarm to see Tas's topknot disappearing into a vast sink hole that had apparently opened up beneath his feet.