n.
- Any of various seals or similar marine mammals.
- Nautical. A very experienced sailor.
- sea·dog (sē'dôg', -dŏg') See fogbow.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.