柯林斯词典burglar alarm (burglar alarms) 1. N-COUNT A burglar alarm is an electric device that makes a bell ring loudly if someone tries to enter a building by force. 防盗报警器 返回 burglar alarm剑桥词典a device on a building that gives a warning such as making a loud noise or flashing a light , or tells the police , if someone tries to enter the building illegally 防盗警报器 返回 burglar alarm