starting pistol
noun [ C ] uk/ˈstɑː.tɪŋ ˌpɪs.təl/ us/ˈstɑːr.t̬ɪŋ ˌpɪs.təl/ (also starter's pistol)
发令枪
a small gun that makes a loud noise instead of firing bullets and is used for starting races
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