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Definition of hard hat noun from the Oxford Advanced Learner's Dictionary

hard hat

noun
 
/ˈhɑːd hæt/
 
/ˈhɑːrd hæt/
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  1. a hat worn by building workers, etc. to protect their headsTopics Clothes and Fashionc2
See hard hat in the Oxford Advanced American Dictionary
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utilize
verb
 
 
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