Dogfish (noun)

1. A small shark of the family Squalidae.
2. A marine fish that is similar in appearance to a shark, but is smaller and has a different anatomy.
3. A type of shark that is typically found in cold, shallow waters and feeds on small fish and invertebrates.

Origin:

Middle english: probably from middle low german docke, a type of shark, or middle dutch doke, a small fish.

Examples:

1. The dogfish is a common species in the Atlantic Ocean.
2. The dogfish is considered a nuisance species by many fishermen.
3. The dogfish is a popular target for sport fishing in certain areas.
4. The dogfish is a valuable source of food for many coastal communities.
5. The dogfish is often used as bait to catch larger predatory fish.