1. A large baleen whale with a prominent dorsal fin, found in oceans worldwide; also called a fin whale.
Usage: Also spelled fin-back or fin back.; Scientific name: Balaenoptera physalus.

Examples

• The finback is the second-largest animal on Earth, after the blue whale.
• Researchers tracked the finback's migration across the Atlantic Ocean.
• A finback can reach speeds of up to 25 miles per hour.
• The distinctive asymmetrical coloring of the finback makes it easy to identify.
• Finbacks are known for their sleek, streamlined bodies.