How Well Do You Know English Slang?
"Maxim automatic gun," 1899, of imitative origin, soldiers' slang from the Boer War. For the ornamental tuft, see pompom.
"ornamental round tuft" (originally on a hat, etc.), 1748, alteration of pompon "ornamental tuft; tuft-like flower head," from French pompon (1725), of unknown origin; perhaps related to Old French pompe "pomp."
The sex act; screwing
[WWII Army; perhaps fr the echoic name pom-pom of various rapid-fire automatic guns, found by 1889]