From WordNet (r) 3.0 (2006):
feather
n 1: the light horny waterproof structure forming the external
covering of birds [syn: feather, plume, plumage]
2: turning an oar parallel to the water between pulls [syn:
feather, feathering]
v 1: join tongue and groove, in carpentry
2: cover or fit with feathers
3: turn the paddle; in canoeing [syn: feather, square]
4: turn the oar, while rowing [syn: feather, square]
5: grow feathers; "The young sparrows are fledging already"
[syn: fledge, feather]