Anti-lock Definition

antēläk, antīläk
antilock
adjective
Designating or of an automotive braking system that prevents the wheels from locking during a sudden stop.
Webster's New World

Alternative spelling of anti-lock.

Wiktionary

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.

Wiktionary