The Collaborative International Dictionary
Plumous
Plumose \Plu*mose"\, Plumous \Plu"mous\, a. [L. plumosus, fr. pluma feather: cf. F. plumeux.]
Having feathers or plumes.
Having hairs, or other p['a]rts, arranged along an axis like a feather; feathery; plumelike; as, a plumose leaf; plumose tentacles.
Wiktionary
plumous
a. (alternative form of plumose English)