seadog

Meanings

1. A sailor accustomed to the sea.
2. A pirate.
3. A seal, especially a harbor seal. (marine mammal)
4. A charge resembling the talbot but with scales, webbed feet and a broad tail.
5. Synonym of sea puppy.
6. A dogfish.
7. An omen of bad luck.
8. A white-topped wave in an estuary.
9. A fogbow, as seen by mariners.

Etymology

From sea + dog.