Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun singleton
3 senses of singleton
Sense 1
singleton -- (a single object (as distinguished from a pair))
=> one, 1, I, ace, single, unity -- (the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch at one")
Sense 2
singleton -- (a set containing a single member)
=> set -- (a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth")
Sense 3
singleton -- (the playing card that is the only card in a suit held in a bridge hand as initially dealt)
=> playing card -- (one of a pack of cards that are used to play card games)