Definitions from Wiktionary (Singleton)

▸ noun:  (playing cards) A playing card that is the only one of its suit in a hand, especially at bridge.
▸ noun:  (playing cards) A hand containing only one card of a certain suit.
▸ noun:  A single object, especially one of a group.
▸ noun:  (computing) A class that may not be instantiated more than once, i.e. that implements the singleton design pattern.
▸ noun:  (mathematics) A set with exactly one element.
▸ noun:  A child or animal that is born singly, not as a twin or other multiple birth.
▸ noun:  A person without a romantic partner.
▸ noun:  A person without a dissociative identity.
▸ noun:  (phonetics) A single consonant, as opposed to a geminated consonant.
▸ noun:  (backgammon) Synonym of blot
▸ noun:  (uncountable) A placename:
▸ noun:  A village and civil parish in Fylde borough, Lancashire, England (OS grid ref SD3838).
▸ noun:  A suburb in Great Chart with Singleton parish, Ashford borough, Kent, England (OS grid ref TQ9841).
▸ noun:  A village and civil parish in Chichester district, West Sussex, England (OS grid ref SU8713).
▸ noun:  A town and local government area (Singleton Council) north-west of Newcastle, New South Wales, Australia.
▸ noun:  An outer southern suburb of Perth, Western Australia.
▸ noun:  A habitational surname from Old English.
▸ Also see singleton

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