noun

• A mariner or sailor, one who mans a ship. Opposed to landman or landsman.
• (Britain, Navy) A person of the lowest rank in the Navy, below able seaman.
• (US, Navy) An enlisted rate in the United States Navy and United States Coast Guard, ranking below petty officer third class and above seaman apprentice.
• A merman; the male of the mermaid.
• A surname originating as an occupation.