- an experienced sailor
Origin of sea dogtranslated, translation of German seehund (or Dutch zeehond), altered (as if from see, sea) from earlier seelhund from an unverified form seel, akin to seal + hund, dog: from its bark any of various seals
sea dogsea dog
- Nautical A very experienced sailor.
- A seal.
- sea·dog See fogbow.
(plural sea dogs)
- Alternative spelling of seadog.