Singleton
/sˈɪŋɡəltən/
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Definition
(noun) A playing card that is the only one of its suit in a hand, especially at bridge.
Sentence Examples
The code uses a singleton pattern to manage the database connection.
A singleton is a thing that is the only one of its kind.
CEFR Practice Quiz
In software design, a ____ is a pattern that restricts a class to only one instance.