柯林斯詞典tuning fork (tuning forks) 1. N-COUNT A tuning fork is a small steel instrument which is used to tune instruments by striking it against something to produce a note of fixed musical pitch. 音叉 返回 tuning fork劍橋詞典a metal object with two long , thin parts , joined to a short handle , that, when hit gently , produces a particular note . It is used for tuning musical instruments . （為樂器調(diào)音用的）音叉 返回 tuning fork