- a small, white ball with a tough cover and a resilient core of rubber, used in playing golf.
- a ball-shaped printing element on certain electric typewriters.
- a small resilient, usually white, ball of either two-piece or three-piece construction, the former consisting of a solid inner core with a thick covering of toughened material, the latter consisting of a liquid centre, rubber-wound core, and a thin layer of balata
- (in some electric typewriters) a small detachable metal sphere, around the surface of which type characters are arranged
