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English definition of “prick (sth) up”

prick (sth) up

verb [T] uk phrasal verb with prick   /prɪk/ us  
When an animal pricks its ears up, or when its ears prick up, it puts its ears up straight because it is listening carefully to a small sound or one that is far away.Animal (non-human) behaviourRaising and loweringUsing the ears If you prick up your ears, or if your ears prick up, you suddenly begin to listen very carefully because you have heard something interesting: I overheard them mentioning my name and pricked up my ears.Using the ears
(Definition of prick (sth) up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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