either of two New World swallows of the genus Stelgidopteryx, having outer primary feathers with small barblike hooks on the margins.
any of several African swallows of the genus Psalidoprocne, having similar feathers.
Origin of rough-winged swallow
An Americanism dating back to 1830–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019