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Definition 2024

curlies pl ‎(plural only)

One or more locks of curly hair.
(computing, informal) Curly brackets.
- 2004, Martin Fowler, UML Distilled: A Brief Guide to the Standard Object Modeling Language
  Some keywords, such as {abstract}, show up in curly brackets. It's never really clear what should technically be in guillemets and what should be in curlies.