intransitive verb
Definition: To go down or lower in position, often below the surface of something, or to become less strong or intense.
Example: The boat began to sink after hitting the rock.
noun
Definition: A water basin that is usually fixed to a wall or floor, used for washing hands, dishes, or other items, and has a drainpipe and water supply.
Example: She filled the sink with soapy water to wash the dishes.
transitive verb
Definition: To cause something to go down below the surface of a liquid or to lower it to a lower position.
Example: He decided to sink the ball into the basket during the game.