1) Feathered 2) Having feathered wings 
winged; feathered
• (a.) Alt. of Pennated
Feathered; resembling a feather. ... Synonym: penniform. ... Origin: L. Pennatus, fr. Penna, feather ... (05 Mar 2000) ... 
Type: Term Pronunciation: pen′āt Definitions: 1. Feathered; resembling a feather. Synonyms: penniform
(pen;at) Pertaining to a skeletal muscle fiber arrangement in which the fibers are attached to tendinous slips in a featherlike pattern.
[adj] - having feathered wings
pennate, pennated 1. Having a wing; feathered. 2. In the shape of a wing. 3. Having feathers or wings.
adjective having feathered wings
Latin penna = feather; hence, a muscle whose fibres approach the tendon from one direction is unipennate; from two, bipennate, and from more than two, multipennate.