safety lock   (TTS Sound)

The safety_lock has 2 Senses.

• safety lock, safety catch
• 安全装置
• guard consisting of a locking device that prevents a weapon from being fired
• 兵器が発射するのを防ぐロック装置がついた危険防止器

• safety lock, safety bolt
• a bolt that cannot be moved from outside the door or gate
• ドアや門の外側からは動かせられないかんぬき