#1 sink v. [drop, drop down] fall or descend to a lower place or level; "He sank to his knees". wn
#2 sink v. cause to sink; "The Japanese sank American ships in Pearl Harbor". wn
#3 sink n. plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe. wn
#4 sink v. [pass, lapse] pass into a specified state or condition; "He sank into nirvana". wn
#5 sink v. [settle, go down, go under] go under, "The raft sank and its occupants drowned". wn
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