Wordnet 3.0
NOUN (1)
1. 
 an adherent of Baptistic doctrines (who practice baptism by immersion); 
[syn: Dunker, Dunkard, Tunker]
WordNet (r) 3.0 (2006):
Dunkard
    n 1: an adherent of Baptistic doctrines (who practice baptism by
         immersion) [syn: Dunker, Dunkard, Tunker]