Ping-pong

Webster's Dictionary of the English Language

·add. ·vi To play ping-pong.

II. Ping-pong ·add. ·noun A size of photograph a little larger than a postage stamp.

III. Ping-pong ·add. ·noun An indoor modification of lawn tennis played with small bats, or battledores, and a very light, hollow, celluloid ball, on a large table divided across the middle by a net.