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English definition of “ambush”

ambush

verb [T] uk   /ˈæm.bʊʃ/ us  
to suddenly attack someone after hiding and waiting for them: Five soldiers died after their bus was ambushed on a country road. He was ambushed by gunmen on his way to work.

ambush

noun [C or U] uk   /ˈæm.bʊʃ/ us  
an occasion when a person or group of people are ambushed: Several passers-by were killed in the ambush. Fear of ambush prevents the police from going to high-risk areas. lie/wait in ambush to hide and wait for someone in order to attack them.
(Definition of ambush from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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