noun (used with a plural verb) Informal.
Origin of long johns
Examples from the Web for long johns
Historical Examples of long johns
Her curly hair bounced as she stomped back and forth, her soft, round buttocks flexing under her long-johns.Someone Comes to Town, Someone Leaves Town
type of warm underwear, 1943, originally for U.S. GIs. By 1919 as a type of pastry. Long john also was used of various sorts of worm, potato, sled, etc.