noun🔗ShareハクジラA whale of the Odontoceti suborder of the cetaceans, including sperm whales, beaked whales, dolphins, and others."The marine biologist studied the toothed whale population in the bay. "海洋生物学者は湾内のハクジラの個体群を研究した。animalbiologynatureoceanChat with AIVocabulary GamePractice Reading