Wiktionary
anti-lock
a. Preventing from becoming stuck or jammed (i.e. locked). Especially applies to anti-lock brakes which are designed to continue rotating for better steering control while slowing the vehicle, rather than "locking" and causing the car to skid.
Usage examples of "anti-lock".
The van spun halfway around in the intersection, facing back the way it came, just as the car that had been following behind it entered the intersection, tires chirping as its anti-lock brakes fought to bring it to a halt that would come, unfortunately, about two feet inside the hood of the Turners' van.