Source : Webster's Revised Unabridged Dictionary (1913)

Nunnery \Nun"ner*y\, n.; pl. {Nunneries}. [OE. nonnerie, OF.
   nonerie, F. nonnerie, fr. nonne nun, L. nonna. See {Nun}.]
   A house in which nuns reside; a cloister or convent in which
   women reside for life, under religious vows. See {Cloister},
   and {Convent}.

Source : WordNet®

nunnery
     n : the convent of a community of nuns