Pronunciation: (skul'pin),[key] —n., —pl.(esp. collectively)-pin,(esp. referring to two or more kinds or species)-pins. 1. any small, freshwater fish of the genus Cottus, of the family Cottidae, having a large head with one or more spines on each side; bullhead.
2. any of numerous marine fishes of the same family.
3. (in California) a common scorpionfish, Scorpaena guttata.