Definition of "screwball" in English

noun

1. (baseball) A pitch thrown with added pressure by the index finger and a twisting wrist motion resulting in a motion to the right when thrown by a right-handed pitcher.

   • The screwball is not thrown much because it tends to damage pitcher's arms.

2. (US) One who behaves in a crazy manner.

   • I will not listen to this screwball any longer.

3. A screwball comedy.

adjective

1. (originally US) Crazy, offbeat, bizarre, zany, or weird.