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. Also called table tennis.

To play ping-pong.

to bounce back and forth, in the manner of a ping-pong ball.

A size of photograph a little larger than a postage stamp.

Slang for masturbation. Also a term to describe the situation when two partners pass a sexual disease back an forth.