Definition of marine noun from the Oxford Advanced Learner's Dictionary

 

marine

 noun
noun
BrE BrE//məˈriːn//
 
; NAmE NAmE//məˈriːn//
 
The army
 
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a soldier who is trained to serve on land or at sea, especially one in the US Marine Corps or the British Royal Marines See related entries: The army Word Origin Middle English (as a noun in the sense ‘seashore’): from Old French marin, marine, from Latin marinus, from mare ‘sea’.Extra examples He’s in the marines. My brother has joined the marines. in the mercantile marine to send in the marines
See the Oxford Advanced American Dictionary entry: marine