1. a small shark with a long tail, especially the spiny dogfish

Examples

• The fisherman caught several dogfish in his nets.
• Dogfish are commonly found in coastal waters.
• The spiny dogfish is one of the most abundant shark species.
• Marine biology students often dissect dogfish in class.
• Dogfish can grow up to four feet in length.
• The dogfish uses its sharp spines for defense against predators.