ˈfi(ə)rˌbələg noun plural
or fir·bolgs -gz
Usage: usually capitalized
Etymology: Old Irish fir Bolg men of the Builg (a Celtic people), from fir (plural of fer man) + Bolg, gen. plural of Builg; akin to Welsh gwr man, Breton gour, Latin vir — more at virile
: an early people of Ireland