golf ball n. gälf bol; date: 1545. 1: a small, hard, dimpled ball used in golf; 2: the spherical printing element of an electric typewriter or printer.
The first golf balls, used in the mid-1500s in Scotland, were wooden. The featherie followed. It was made from a “gentleman's hat full” of wet feathers stuffed and sewn into a wet 1½-inch leather pouch. After the feathers expanded and the leather shrank, golfers had a ball as hard as a modern ball.