Pong
来自Big Physics
early 20th century: of unknown origin.
wiktionary
Probably from Romani pan(“to stink”).
From ping, via the pairing of ping-pong.
pong (plural pongs)
etymonline
pong (n.)
by late 1960s as an abbreviation of ping-pong. The electronic arcade game (with capital P-) was released 1972. The word also was or is an Australian derogatory name for a Chinese (1931), and "an unpleasant smell, stink" (1919), in both sense of uncertain origin.
