late 13c., from O.Fr. poudre (13c.), earlier pouldre (11c.), from L. pulverem (nom. pulvis) "dust" (see
pollen). In the sense "powdered cosmetic," it is recorded from 1570s. In figurative sense, powder keg is first attested 1855. Powder room, euphemistic for "women's lavatory,"
is attested from 1941. Powder puff first recorded 1704; as a symbol of femaleness or effeminacy, in use from at least 1930s. Phrase take a powder "scram, vanish," is from 1920, perhaps from the notion of taking a laxative medicine, so one has to leave in a hurry; or from a magician's magical powder, which made things disappear.
powderc.1300, from O.Fr. poudrer, from poudre (see
powder (n.))