English

Definition of master gunnery sergeant noun from the Oxford Advanced Learner's Dictionary

 

master gunnery sergeant

 noun
noun
BrE BrE//ˌmɑːstə ˈɡʌnəri sɑːdʒənt//
 
; NAmE NAmE//ˌmæstər ˈɡʌnəri sɑːrdʒənt//
 
 
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an officer of middle rank in the US marines
See the Oxford Advanced American Dictionary entry: master gunnery sergeant