Sink

plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe

(technology) a process that acts to absorb or remove energy or a substance from a system

a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof

a covered cistern

fall or descend to a lower place or level

cause to sink

pass into a specified state or condition

go under

descend into or as if into some soft substance or place

appear to move downward

fall heavily or suddenly

fall or sink heavily

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