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English definition of “singleton”

singleton

noun [C] uk   /ˈsɪŋ.ɡl̩.tən/ us  

singleton noun [C] (CARD)

specialized games a playing card that is the only one of that suit that a player has: Jack has a singleton in hearts.Actions involved in playing cards

singleton noun [C] (PERSON)

humorous a man or woman who does not have a romantic or sexual partnerMarital status
(Definition of singleton from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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