Definition of 'sink'

Noun

1. plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe
2. (technology) a process that acts to absorb or remove energy or a substance from a system; "the ocean is a sink for carbon dioxide"
      Antonyms: source
3. a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
      Synonyms: sinkhole swallow hole
4. a covered cistern; waste water and sewage flow into it
      Synonyms: cesspool cesspit sump

Verb

1. fall or drop to a lower place or level; "He sank to his knees"
      Synonyms: drop drop down
2. cause to sink; "The Japanese sank American ships in Pearl Harbor"
3. pass into a specified state or condition; "He sank into Nirvana"
      Synonyms: pass lapse
4. go under, "The raft sank and its occupants drowned"
      Synonyms: settle go down go under
      Antonyms: float swim
5. descend into or as if into some soft substance or place; "He sank into bed"; "She subsided into the chair"
      Synonyms: subside
6. appear to move downward; "The sun dipped below the horizon"; "The setting sun sank below the tree line"
      Synonyms: dip
7. fall heavily or suddenly; decline markedly; "The real estate market fell off"
      Synonyms: slump fall off
8. fall or sink heavily; "He slumped onto the couch"; "My spirits sank"
      Synonyms: slump slide down
9. embed deeply; "She sank her fingers into the soft sand"; "He buried his head in her lap"
      Synonyms: bury

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