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English definition of “marine”

marine

adjective [before noun] uk   /məˈriːn/ us  
related to the sea or sea transport: The oil slick seriously threatens marine life around the islands. Marine biologists are concerned about the effects of untreated sewage that is flowing into coastal waters. One plane, a marine F18, was lost in the raid. The Central harbour area will be closed to all marine traffic from 3.45 p.m. to 4.30 p.m.
See also

marine

noun [C] uk   /məˈriːn/ us  
a soldier who works closely with the navy and is trained especially for military operations on land that begin from the sea
(Definition of marine from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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