Origin of seadog
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for seadog
Nay, the Seadog of Cowes is no man to be the prey of womanish tremors; he goes gaily like a true Mariner to confront the elements.
A basket with a turbot is in the stern-sheets; that turbot will form part of the Seadog's humble evening meal.
Twenty strokes more—the peril is past; and the Seadog bounds on to the deck of his stout vessel.