DOUBLETON

doubleton

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

Source: WordNet® 3.1

Etymology

Noun

doubleton (plural doubletons)

(mathematics, rare) A set containing precisely two elements.

(bridge) A pair of cards of the same suit, which are the only cards of that suit in a player's hand

Coordinate terms

• singleton

Source: Wiktionary