Plumule

Part of speech: noun (n.)

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

2. A down feather.

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

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