type of tropical woody vine, 1849, named for French navigator Louis Bougainville (1729-1811).
type of cookie (made by Nabisco), 1912; the source of the name has been forgotten. As a derogatory word for "black person felt to have a 'white' mentality," 1968, African-American vernacular, from the snack cookies, which consist of dark chocolate wafers and white sugar cream filling (hence "brown outside, white inside"). Compare radish-communist (1920), one who proclaims enthusiasm for the Party but privately opposes it, on the notion of red outside, white inside.
plant genus, mostly herbaceous climbers, 1550s, "periwinkle," from Latin clematis, from Greek klematis, in Dioscorides as the name of a climbing or trailing plant (OED says probably the periwinkle) with long and lithe branches, diminutive of klema "vine-branch, shoot or twig broken off" (for grafting), from klan "to break" (see clastic).
also Sauternes, name for certain white wines from the Gironde, by 1711, from Sauterne, district near Bordeaux where they are made.