safety catch

noun
🔊/ˈseɪfti kætʃ/
🔊/ˈseɪfti kætʃ/, 🔊/ˈseɪfti ketʃ/
(especially British English)
(North American English usually safety)
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  1. a device that stops a gun from being fired or a machine from working by accident(枪、炮等的)保险机,保险栓;(机器设备的)安全掣子
    • Is the safety catch on?保险栓拉上了吗?