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late 15c., from Old French viril, from Latin virilis "of a man, manly," from vir "a man, a hero," from PIE *uiHro "freeman" (cf. Sanskrit virah, Avestan vira-, Lithuanian vyras, Lithuanian vyras, Old Irish fer, Welsh gwr, Gothic wair, Old English wer "man"). Virile member for "penis" is recorded from 1540s.
virile vir·ile (vēr'əl, -īl')
Of, relating to, or having the characteristics of an adult male, especially the ability to perform sexually as a male.
Having or showing masculine spirit, strength, vigor, or power.