Liberal Dictionary English Dictionary
noun, plural Fir·bolgs, (especially collectively) Fir·bolg. Irish Legend.
- any member of the pre-Celtic inhabitants of Ireland who were defeated by the Tuatha De Danann.
1797, ancient supernatural people of Ireland (enemies of the Dannans), perhaps from Old Irish fir, plural of fear “man” + bolg, genitive plural of bolg “bag, belly;” or second element may be cognate with Gaulish Belgae.