PLU'MOUS, a. [L. plumosus.] Feathery; resembling feathers. 1. In botany, a plumose bristle is one that has hairs growing on the sides of the main bristle. Plumose pappus or down is a flying crown to some seeds, composed of feathery hairs.
Plumose Plu*mose", Plumous Plu"mous, a. [L. plumosus, fr. pluma feather: cf. F. plumeux.] 1. Having feathers or plumes. 2. Having hairs, or other p['a]rts, arranged along an axis like a feather; feathery; plumelike; as, a plumose leaf; plumose tentacles.