1. Plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe (synset 104230655)
  2. (technology) a process that acts to absorb or remove energy or a substance from a system (synset 113577118)
    "the ocean is a sink for carbon dioxide"
  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 (synset 109458643)
  4. A covered cistern;
    Waste water and sewage flow into it (synset 103002170)
  1. Fall or descend to a lower place or level (synset 201989937)
    "He sank to his knees"
  2. Cause to sink (synset 201990883)
    "The Japanese sank American ships in Pearl Harbor"
  3. Pass into a specified state or condition (synset 201976145)
    "He sank into nirvana"
  4. Go under (synset 201993887)
    "The raft sank and its occupants drowned"
  5. Descend into or as if into some soft substance or place (synset 201975943)
    "He sank into bed"; "She subsided into the chair"
  6. Appear to move downward (synset 202043524)
    "The sun dipped below the horizon"; "The setting sun sank below the tree line"
  7. Fall heavily or suddenly;
    Decline markedly (synset 200433792)
    "The real estate market fell off"
  8. Fall or sink heavily (synset 201992900)
    "He slumped onto the couch"; "My spirits sank"
  9. Embed deeply (synset 201532886)
    "She sank her fingers into the soft sand"; "He buried his head in her lap"

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