a. [ L. marinus, fr. mare the sea: cf. F. marin. See Mere a pool. ] 1. Of or pertaining to the sea; having to do with the ocean, or with navigation or naval affairs; nautical; as, marine productions or bodies; marine shells; a marine engine. [ 1913 Webster ]

2. (Geol.) Formed by the action of the currents or waves of the sea; as, marine deposits. [ 1913 Webster ]

Marine acid (Chem.), hydrochloric acid. [ Obs. ] --
Marine barometer. See under Barometer. --
Marine corps, a corps formed of the officers, noncommissioned officers, privates, and musicants of marines. --
Marine engine (Mech.), a steam engine for propelling a vessel. --
Marine glue. See under Glue. --
Marine insurance, insurance against the perils of the sea, including also risks of fire, piracy, and barratry. --
Marine interest, interest at any rate agreed on for money lent upon respondentia and bottomry bonds. --
Marine law. See under Law. --
Marine league, three geographical miles. --
Marine metal, an alloy of lead, antimony, and mercury, made for sheathing ships. Mc Elrath. --
Marine soap, cocoanut oil soap; -- so called because, being quite soluble in salt water, it is much used on shipboard. --
Marine store, a store where old canvas, ropes, etc., are bought and sold; a junk shop. [ Eng. ] [ 1913 Webster ]

n. [ F. marin a sea solider, marine naval economy, a marine picture, fr. L. marinus. See Marine, a. ] 1. A solider serving on shipboard; a sea soldier; one of a body of troops trained to do duty in the navy. [ 1913 Webster ]

2. Specifically: A member of the United States Marine Corps, or a similar foreign military force. [ PJC ]

3. The sum of naval affairs; naval economy; the department of navigation and sea forces; the collective shipping of a country; as, the mercantile marine. [ 1913 Webster ]

4. A picture representing some marine subject. [ 1913 Webster ]

Tell that to the marines, an expression of disbelief, the marines being regarded by sailors as credulous. [ Colloq. ] [ 1913 Webster ]

a. [ Cf. F. mariné. ] (Her.) Having the lower part of the body like a fish. Crabb. [ 1913 Webster ]

n. (Mil.) A military explosive device designed to be placed on or under the surface of a body of water, and to explode when ships pass nearby or come in contact with it. Its function is to destroy enemy ships or deny hostile naval forces access to certain areas of the sea, usually near the shoreline. Also called underwater mine and floating mine, and previously referred to as a torpedo (See torpedo{ 2 } (a)). [ PJC ]

n. [ F. marinier, LL. marinarius. See Marine. ] One whose occupation is to assist in navigating ships; a seaman or sailor. Chaucer. [ 1913 Webster ]

Mariner's compass. See under Compass. [ 1913 Webster ]

n. Seamanship. [ Obs. ] Udalt. [ 1913 Webster ]