Seaman

1. n. One whose occupation is to assist in the management of ships at sea; a mariner; a sailor; — applied both to officers and common mariners, but especially to the latter. Opposed to landman, or landsman.
2. n. A merman; the male of the mermaid.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.