1. a small Arctic whale with a long, straight tusk projecting from its head
Usage: also spelled narwhal

Examples

• The narwal is sometimes called the unicorn of the sea.
• Scientists study narwal migration patterns in the Arctic Ocean.
• The male narwal’s tusk can grow up to ten feet long.
• Inuit hunters have traditionally relied on narwal for food and materials.
• Climate change threatens the narwal’s icy habitat.
• The narwal’s tusk is actually an elongated tooth.