Dictionary definition · sink
noun
- 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"the ocean is a sink for carbon dioxide"
- 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; waste water and sewage flow into it
verb
- fall or descend to a lower place or level"He sank to his knees"
- cause to sink"The Japanese sank American ships in Pearl Harbor"
- pass into a specified state or condition; sink into"He sank into nirvana"
- go under"The raft sank and its occupants drowned"
- descend into or as if into some soft substance or place"He sank into bed"
- appear to move downward"The sun dipped below the horizon"
- fall heavily or suddenly; decline markedly"The real estate market fell off"
- fall or sink heavily"He slumped onto the couch"
Source: Open English WordNet (CC BY 4.0).