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English definition of “curl up”

curl up

(EDGES) phrasal verb with curl     /kɜːl/ US  /kɝːl/ verb [I or T]
If something flat, such as paper, curls up, the edges start to become rounded.Bending, twisting and curving
(Definition of curl up (EDGES) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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