Noun
light hollow ball used in playing table tennis
Source: WordNetping pong ball
The scale model — not much bigger than a Ping-Pong ball, affixed to the wall of the Houlton Information Center — was a little underwhelming. Source: Internet
The deadlock was broken on NBC’s “Today” show when the winning Ping-Pong ball was pulled out of a hat. Source: Internet
What damage can a Ping-Pong ball do as it hurtles at 700 miles an hour through a vacuum tube? Source: Internet