floating balls of slushy ice formed at sea.
- Ball indicator
bank indicator. a flight instrument that measures the angle of roll about an aircraft’s horizontal axis, thereby indicating whether or not the aircraft is skidding or slipping.
- Ball is in someone’s court, the
ball is in someone’s court, the sentence The next action, decision, response, etc, belongs to the person or persons indicated: That’s my offer. The ball is in your court [1960s+; fr tennis]
- Ball jack
a spherical or approximately spherical body or shape; sphere: He rolled the piece of paper into a ball. a round or roundish body, of various sizes and materials, either hollow or solid, for use in games, as baseball, football, tennis, or golf. a game played with a ball, especially baseball: The boys are out playing […]
- Ball joint
ball-and-socket joint (def 2). Historical Examples It is obvious that the ball joint between b and c permits the flange a to set at an angle if necessary. Modern Machine-Shop Practice, Volumes I and II Joshua Rose noun another name for ball-and-socket joint