Wordnet 3.0
NOUN (1)
1. 
 a woman priest; 
The Collaborative International Dictionary of English v.0.48:
Priestess \Priest"ess\, n.
   A woman who officiated in sacred rites among pagans. --Abp.
   Potter.
   [1913 Webster]
WordNet (r) 3.0 (2006):
priestess
    n 1: a woman priest