Source : Webster's Revised Unabridged Dictionary (1913)

Seafarer \Sea"far`er\, n. [Sea + fare.]
   One who follows the sea as a business; a mariner; a sailor.

Source : WordNet®

seafarer
     n : a man who serves as a sailor [syn: {mariner}, {seaman}, {tar},
          {Jack-tar}, {Jack}, {old salt}, {gob}, {sea dog}]