definition of
sink

[1] #1 sink v. [drop, drop down] fall or descend to a lower place or level; "He sank to his knees". wn

[2] #2 sink v. cause to sink; "The Japanese sank American ships in Pearl Harbor". wn

[3] #3 sink n. plumbing fixture consisting of a water basin fixed to a wall or floor and having a drainpipe. wn

[4] #4 sink v. [pass, lapse] pass into a specified state or condition; "He sank into nirvana". wn

[5] #5 sink v. [settle, go down, go under] go under, "The raft sank and its occupants drowned". wn