look out - definition in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online (US)

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English definition of “look out”

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look out

phrasal verb with look uk   us   /lʊk/ verb
to watch what is happening and be careful: The police have warned shopkeepers to look out for forged notes.B1 said or shouted in order to tell someone that they are in danger: Look out! There's a car coming!
(Definition of look out from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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