noun🔗ShareネズミイルカA small cetacean of the family Phocoenidae, related to dolphins and whales."The marine biologist observed a playful porpoise near the research vessel. "海洋生物学者は、調査船の近くで遊び好きなネズミイルカを観察しました。animaloceanbiologynaturefishChat with AIVocabulary GamePractice Reading
noun🔗Shareネズミイルカ(imprecisely) Any small dolphin."The marine park had dolphins and a porpoise, which is like a smaller kind of dolphin. "マリンパークにはイルカとネズミイルカがいて、それはより小型のイルカのようなものです。animaloceanfishbiologynatureChat with AIVocabulary GamePractice Reading
verb🔗Share水面から飛び出して潜るSaid of an air-breathing aquatic animal such as a porpoise or penguin: To repeatedly jump out of the water to take a breath and dive back in a continuous motion."The dolphins porpoised playfully, leaping repeatedly out of the water and diving back in. "イルカたちは水面から飛び出して潜り、楽しそうに遊んでいた。animalbiologyoceannatureactionChat with AIVocabulary GamePractice Reading
verb🔗Share上下に揺れるSaid of an aircraft: to make a series of plunges when taking off or landing; or of a watercraft: to successively plunge up and down in the water."The small seaplane began to porpoise violently as it attempted to land on the choppy lake, making it difficult for the pilot to control. "小型水上飛行機は、荒れた湖に着陸しようとしたとき、激しく上下に揺れ始め、パイロットが操縦するのが困難になりました。nauticalvehiclesailingtechnologyChat with AIVocabulary GamePractice Reading
