feather

(noun) the light horny waterproof structure forming the external covering of birds. Synonyms: plume, plumage.

(noun) turning an oar parallel to the water between pulls. Synonyms: feathering.

(verb) join tongue and groove, in carpentry.

(verb) cover or fit with feathers.

(verb) turn the paddle; in canoeing. Synonyms: square.

(verb) turn the oar, while rowing. Synonyms: square.

(verb) grow feathers. Synonyms: fledge. Examples: "The young sparrows are fledging already."