The Collaborative International Dictionary of English v.0.48:

Virility \Vi*ril"i*ty\, n. [L. virilitas: cf. F. virilit['e].]
   The quality or state of being virile; developed manhood;
   manliness; specif., the power of procreation; as, exhaustion.
   "Virility of visage." --Holland.
   [1913 Webster]

WordNet (r) 3.0 (2006):

virility
    n 1: the masculine property of being capable of copulation and
         procreation
    2: the trait of being manly; having the characteristics of an
       adult male [syn: manfulness, manliness, virility]