jumper cables noun
Learner's definition of JUMPER CABLES
[plural] US
: a pair of electrical cables that are used to start a car, truck, etc., when its battery is not working by connecting the battery to another source of power (such as another car's battery) : cables used to jump-start a vehicle（将一辆汽车带电的电池与另一辆汽车不带电的电池连接起来使后者启动的）跨接引线