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sink |
Also found in: Dictionary/thesaurus, Idioms, Wikipedia, Hutchinson | 0.04 sec. |
sinkholeor sink or dolineDepression formed as underlying limestone bedrock is dissolved by groundwater. Sinkholes vary greatly in area and depth and may be very large. The two main varieties are those caused by the collapse of a cavern roof, and those caused by the gradual dissolving of rock under a soil mantle. Collapsed sinkholes generally have steep rock sides and may receive streams that then flow underground. Soil-mantled sinkholes are generally shallower; they may become clogged with clay and hold a small lake. sinkA device or place that accepts something. See heat sink, data sink and sink device. sink 1. an area of ground below that of the surrounding land, where water collects 2. Physics a device or part of a system at which energy is removed from the system 3. Informal (of a housing estate or school) deprived or having low standards of achievement |
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