- one of the paired, elongated, sickle-shaped, middle feathers of the tail of the rooster.
Origin of sickle feather
First recorded in 1680–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (often plural) any of the elongated tail feathers of certain birds, esp the domestic cock
C17: so called because of its shape