Search Result for "doubleton": 
Wordnet 3.0

NOUN (1)

1. (bridge) a pair of playing cards that are the only cards in their suit in the hand dealt to a player; 



WordNet (r) 3.0 (2006):

doubleton
    n 1: (bridge) a pair of playing cards that are the only cards in
         their suit in the hand dealt to a player