pilot whale

Từ điển WordNet v3.1 - WordNet Dictionary

noun

small dark-colored whale of the Atlantic coast of the United States;
the largest male acts as pilot or leader for the school
• Syn:
black whale, common blackfish, blackfish, Globicephala melaena
• Hypernyms:
dolphin
• Member Holonyms:
Globicephala, genus Globicephala