noun🔗ShareピストンA solid disk or cylinder that fits inside a hollow cylinder, and moves under pressure (as in an engine) or displaces fluid (as in a pump)"The car engine uses pistons to convert the fuel's energy into movement. "車のエンジンは、燃料のエネルギーを運動に変換するためにピストンを使用します。machinetechnicalpartdeviceChat with AIVocabulary GamePractice Reading
noun🔗ShareピストンA valve device in some brass instruments for changing the pitch"The trumpet player pressed the pistons to change the notes of the song. "トランペット奏者は、曲の音符を変えるためにピストンを押しました。musicdevicetechnicalChat with AIVocabulary GamePractice Reading
