chief master sergeant
noun/ˌtʃiːf ˌmɑːstə ˈsɑːdʒənt/
/ˌtʃiːf ˌmæstər ˈsɑːrdʒənt/
- an officer of middle rank in the US air forceTopics War and conflictc2
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chief master sergeant
Definition of chief master sergeant noun from the Oxford Advanced Learner's Dictionary