A barb or fibre of the shaft of a feather, esp. of the peacock or ostrich, used in making artificial flies for angling. Also harl, n.1

Angling. (a) A length of twisted hair or gut forming part of a fishing-line. Scottish. (b) Part of an artificial fly: see quot. 1872, and cf. sense 3.

A figure or imitation of a wing (e.g. on an image of a bird, etc., or on an angler's artificial fly).

A tuft of hair attached to an artificial fly. Obsolete.