seafarer

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A sailor or mariner.
• noun A person who travels by sea.

from The Century Dictionary.

• noun One whose life is spent in voyaging on the ocean; a sailor; a mariner.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who follows the sea as a business; a mariner; a sailor.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A sailor or mariner.
• noun One who travels by sea.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a man who serves as a sailor