Definition of "sink"
sink
/sɪŋk/
verb
third-person singular simple present sinks, present participle sinking, simple past sank or sunk, past participle sunk or sunken
(heading, social) To diminish or be diminished.
(intransitive, figuratively, of the heart or spirit) To experience apprehension, disappointment, dread, or momentary depression.
(transitive, slang, archaic) To conceal and appropriate.
(transitive, slang) To drink (especially something alcoholic).
(transitive, slang) To pay absolutely.
noun
plural sinks
(graph theory) A destination vertex in a transportation network.