mother superior

from WordNet (r) 3.0 (2006)

mother superior
    n 1: the superior of a group of nuns [syn: {abbess}, {mother
         superior}, {prioress}]

from Moby Thesaurus II by Grady Ward, 1.0

27 Moby Thesaurus words for "mother superior":
      abbess, canoness, chatelaine, clergywoman, conventual, dame,
      dowager, first lady, goodwife, governess, great lady, homemaker,
      housewife, lady superior, madam, matriarch, matron, mistress,
      novice, nun, postulant, prioress, religieuse, secular canoness,
      sister, superioress, the reverend mother