1. The common seal.

2. The common seal; an old sailor.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• aea dog,
• zea dog,
• xea dog,
• dea dog,
• eea dog,
• wea dog,
• swa dog,
• ssa dog,
• sda dog,
• sra dog,
• s4a dog,
• s3a dog,
• sez dog,
• ses dog,
• sew dog,
• seq dog,
• sea sog,
• sea xog,
• sea fog,
• sea rog

The adjective form of the word "sea dog" is "seadogged".

The plural form of "sea dog" is "sea dogs".

The singular form of the word "sea dog" is "sea dog".