pubes (n.)
1560s, "pubic hair," from Latin pubes "pubescent, arrived at the age of puberty, of ripe years, grown up," also, as a noun, "a sign of puberty" (such as pubic hair), also "young men of the age of puberty" (see puberty). In 19c. also "pubic bone," and earlier "part of either hip bone that forms the front of the pelvis," from Latin os pubis, from pubes "genital area." In modern slang, monosyllable, a familiar shortening of pubic hairs (see pubic).