Source : Webster's Revised Unabridged Dictionary (1913)

Lupercalia \Lu`per*ca"li*a\, n. pl. [L. luperealis, fr. Lupercus
   the Lycean Pan, so called fr. lupus a wolf, because he kept
   off the wolves.] (Rom. Antiq.)
   A feast of the Romans in honor of Lupercus, or Pan.