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Old Irish fir Bolg men of the Builg (a Celtic people), from fir (plural of fer man) + Bolg, genitive plural of Builg; akin to Welsh gwr man, Breton gour, Latin vir
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“Firbolg.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Firbolg. Accessed 4 Dec. 2021.
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