What is etym: [Cf. F. couverte.] (Zoöl.) One of the special feathers covering the bases of the quills of the wings and tail of a bird. See Illust. of Bird called?

covert — Etym: [Cf. F. couverte.] (Zoöl.) One of the special feathers covering the bases of the quills of the wings and tail of a bird. See Illust. of Bird. (Webster's 1913.)

Sources