1. A genus of fishes, the Cottus, with a head broader than the body, whence the name. This fish is called by some the Miller's thumb.
3. A small black water vermin.
4. A large species of trout, called also sea-trout, thicker than the common sort, and weighing about three pounds. Its back has a bluish green gloss, and there are several black spots on the sides.
6. Bishops weed.