Webster's Revised Unabridged Dictionary · 1913

Dogfish

Dogfish , noun

1.
(Zoology) A small shark, of many species, of the genera Mustelus, Scyllium, Spinax, etc.

The European spotted dogfishes (Scyllium catudus, and Scyllium canicula) are very abundant; the American smooth, or blue dogfish is Mustelus canis; the common picked, or horned dogfish (Squalus acanthias) abundant on both sides of the Atlantic.

2.
The bowfin (Amia calva). See Bowfin.
3.
The burbot of Lake Erie.