n.幼芽，棉毛

英文释义

pl. of Plumula

n. The first bud, or gemmule, of a young plant; the bud, or growing point, of the embryo, above the cotyledons. See Illust. of Radicle.

n. A down feather.

n. The aftershaft of a feather. See Illust. under Feather.

n. One of the featherlike scales of certain male butterflies.