- a playing card that is the only one of its suit in a hand dealt to a player
- something occurring or existing singly and not as one of a pair or of a group
Origin of singleton; from single, after proper names ending in -ton
- One that is single, especially:a. A child or animal born as a single birth, especially in contrast to one that is part of a multiple birth.b. A playing card that is the only one of its suit in a player's hand.c. An unmarried person.d. Linguistics A nongeminate consonant.
- An individual separated or distinguished from two or more of its group.
Origin of singletonFrom the name Singleton (influenced by single).
- (playing cards) A playing card that is the only one of its suit in a hand, especially at bridge.
- A single object, especially one of a group.
- (computing) A class that may not be instantiated more than once, i.e. that implements the singleton design pattern.
- (mathematics) A set with exactly one element.
- A child or animal that is born singly, not as a twin or other multiple birth.