1 to stop a supply of water, gas or electricity going to a piece of equipment or a building 停止供应（水、煤气、电力）: If you don't pay your gas bill your supply will be disconnected. 如果你不缴煤气费，煤气供应会被切断。

2 to separate sth from sth 使不连接；使分离: The brake doesn't work because the cable has become disconnected from the lever. 剎车失灵了，因为跟杠杆连结的钢丝断了。