boys-and-girls n 1: Eurafrican annual naturalized in America as a weed; formerly dried for use as a purgative, diuretic or antisyphilitic [syn: {herb mercury}, {herbs mercury}, {boys-and-girls}, {Mercurialis annua}]
boys-and-girls \boys-and-girls\ n. (Bot.) a Eurafrican annual ({Mercurialis annua}) naturalized in America as a weed; formerly dried for use as a purgative, diuretic or antisyphilitic. Syn: herb mercury, herbs mercury. [WordNet 1.5]