Plumule — of Plumula
Plumule — The first bud, or gemmule, of a young plant; the bud, or growing point, of the embryo, above the cotyledons. See Illust. of Radicle.
Plumule — A down feather.
Plumule — The aftershaft of a feather. See Illust. under Feather.
Plumule — One of the featherlike scales of certain male butterflies.