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Definition of gas mask noun from the Oxford Advanced Learner's Dictionary

gas mask

noun
 
/ˈɡæs mɑːsk/
 
/ˈɡæs mæsk/
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  1. a piece of equipment worn over the face as protection against poisonous gas
See gas mask in the Oxford Advanced American Dictionary
Check pronunciation: gas mask

Nearby words

trait
noun
 
 
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