Definitions of Marine:

• noun:   a member of the United States Marine Corps
• adjective:   of or relating to the sea

  Example: "Marine explorations"

• adjective:   of or relating to military personnel who serve both on land and at sea (specifically the U.S. Marine Corps)

  Example: "Marine barracks"

• adjective:   native to or inhabiting the sea

  Example: "Marine plants and animals such as seaweed and whales"

• adjective:   relating to or involving ships or shipping or navigation or seamen

  Example: "Marine insurance"

• name:  A female given name (rare: 1 in 100000 females; popularity rank in the U.S.: #3622)
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #7958)