- (archaic) foreigner
- (dated) Gaul, Gaulish person
- Frenchman, Romance-speaking person not from Lower Brittany
From Old Irish gall (“foreigner”), from Latin Gallus (“a Gaul”), from a native Celtic name, the Gauls being the first strangers to visit or be visited by the Irish in Pre-Roman and Roman times. Gaul itself perhaps derives from Proto-Indo-European *ghaslo-?, root *ghas (Latin hostis, English guest). Compare Proto-Celtic *gallo-s (whence Welsh gal (“enemy, foe”)).