Definitions
1.NounA sailor accustomed to the sea."The old seadog knew the storm was coming long before the rest of the crew were aware of it."
2.NounA pirate.
3.NounA seal, especially a harbor seal. (marine mammal)
4.NounA charge resembling the talbot but with scales, webbed feet and a broad tail.
5.NounSynonym of sea puppy.
6.NounA dogfish.
7.NounAn omen of bad luck.
8.NounA white-topped wave in an estuary.
9.NounA fogbow, as seen by mariners.