A negative terminal is the grounded terminal on a car battery, typically marked by a minus (-) sign. It is usually color-coded black. The other terminal is positive, usually color-coded red or orange, and marked with a plus (+) sign. The grounded terminal connects to a grounded source on the vehicle, typically a bolt in the chassis.
also jack-boot (jÄkâ²boÍotâ²) n. 1. a. A stout military boot with a flared top that extends above the knee. b. A stout military boot that has an often studded sole, lacks laces, and extends to mid-calf.
boot â(plural boots) 1  A heavy shoe that covers part of the leg. 2  A blow with the foot; a kick. ( construction) A flexible cover of rubber or plastic, which may be preformed to a particular shape and used to protect a shaft, lever, switch, or opening from dust, dirt, moisture, etc.