(Science: medicine) marine acid, a steam engine for propelling a vessel. Marine glue. See 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 law. Marine league, three geographical miles. Marine metal, an alloy of lead, antimony, and mercury, made for sheathing ships. 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.