The number five in cards or dice: The roll of the dice resulted in a double cinque.

1. To descend or to move to the bottom; especially, when it moves slowly or in stages: Horace could see the rock sink down to the bottom of the pool.
2. To become lower in amount, value, etc.; or to decline or to decrease: Just watch, this company's stock will sink after it announces that its profits are less than expected.
3. To do something that is morally wrong: How could Neal sink to cheating like that?

A basin typically with a built-in drain and water supply used for washing hands, dishes, etc.: Shelly filled the sink with water to wash the breakfast dishes.

1. A situation in which two or more people or things move or proceed together at the same time and speed: You could see the dancers move in sync across the stage.
2. A condition in which two or more people or things agree with or match one another and work together properly: Since Homer's views are in sync with his colleagues, they can proceed with the project.

An informal abbreviation of "synchronization", "synchronism", or "synchronize", etc.