The Collaborative International Dictionary of English v.0.48:

Celibacy \Ce*lib"a*cy\, n. [See Celibate, n.]
   The state of being unmarried; single life, esp. that of a
   bachelor, or of one bound by vows not to marry. "The celibacy
   of the clergy." --Hallom.
   [1913 Webster]

WordNet (r) 3.0 (2006):

celibacy
    n 1: an unmarried status
    2: abstaining from sexual relations (as because of religious
       vows) [syn: chastity, celibacy, sexual abstention]