sink

1. (heading, physical) To move or be moved into something.Examples: "A stone sinks in water.  The sun gradually sank in the west."Synonyms: descend, founder, go down, bury, dip, dunk, submergeergativephysical

2. (heading, physical) To move or be moved into something.Examples: "An iceberg sank the Titanic.  British battleships sank the Bismarck."physicaltransitive

3. (heading, physical) To move or be moved into something.Examples: "Before installing the new surfacing material, sink any protruding nails."; "The joint will hold tighter if you sink a wood screw through both boards.  The dog sank its teeth into the delivery man's leg."physicaltransitive

4. (heading, physical) To move or be moved into something.Examples: "to sink a well in the ground"physicaltransitive

5. (heading, physical) To move or be moved into something.Examples: "My sister beats me at pool in public a second time. I claim some dignity back by potting two of my balls before Tammy sinks the black."physicaltransitive

6. (heading, social) To diminish or be diminished.Examples: "But open converse is there none, ⁠So much the vital spirits sink ⁠To see the vacant chair, and think, ‘How good! how kind! and he is gone.’"; "I tried, but I could not wake him. This caused me a great fear, and I looked around terrified. Then indeed, my heart sank within me. Beside the bed, as if he had stepped out of the mist, or rather as if the mist had turned into his figure, for it had entirely disappeared, stood a tall, thin man, all in black."; "Peter's heart sank. "Don't you think it is dreadful?" he asked."figurativelyintransitive