noun🔗ShareMonodon monoceros, an Arctic cetacean that grows to about 20 feet (6 meters) long, the male having a single horn-like tusk, a twisted, pointed canine tooth that projects forward."The children were fascinated by the picture of the narwhal with its long, spiraled tusk, learning it was a type of whale that lives in the Arctic. "animaloceannaturebiologyfishChat with AIVocabulary GamePractice Reading
