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]

Moby Thesaurus II by Grady Ward, 1.0:

68 Moby Thesaurus words for "celibacy":
   Encratism, Friday, Lenten fare, Platonic love, Pythagoreanism,
   Pythagorism, Rechabitism, Shakerism, Spartan fare, Stoicism,
   abstainment, abstemiousness, abstention, abstinence, alienation,
   aloneness, aloofness, asceticism, avoidance, bachelorhood,
   banyan day, chastity, continence, continency, detachment, eschewal,
   fast, fish day, friarhood, fruitarianism, gymnosophy, intactness,
   isolation, keeping apart, loneliness, loneness, lonesomeness,
   maidenhead, maidenhood, monachism, monasticism, monkery,
   moving apart, nephalism, plain living, privacy, purity, refraining,
   refrainment, seclusion, self-restraint, separateness,
   sequestration, sexual abstinence, simple diet, single blessedness,
   singleness, solitariness, solitude, spare diet, spinsterhood,
   splendid isolation, teetotalism, the pledge, total abstinence,
   vegetarianism, virginity, withdrawal