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Definition of blue helmet noun from the Oxford Advanced Learner's Dictionary

blue helmet

noun
 
/ˌbluː ˈhelmɪt/
 
/ˌbluː ˈhelmɪt/
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  1. a member of a United Nations force that is trying to prevent war or violence in a place
See blue helmet in the Oxford Advanced American Dictionary
paramedic
noun
 
 
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