柯林斯詞典harmonica /hɑ??m?n?k?/ (harmonicas) 1. N-COUNT A harmonica is a small musical instrument. You play the harmonica by moving it across your lips and blowing and sucking air through it. 口琴[oft 'the' N] 返回 harmonica劍橋詞典a small , rectangular musical instrument , played by blowing and sucking air through it 口琴 返回 harmonica