Preventing something from becoming stuck or jammed. 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.

A lock, typically on a door in a bank vault, that cannot be unlocked before a specified time.

(US, slang) A command to prepare a weapon for battle. / (US, slang) Prepare for an imminent event.

(US, slang) To prepare one's weapon. / (US, slang) To prepare for an imminent event.

(transitive) To imprison or incarcerate (someone). / (transitive) To invest in something long term. / (intransitive) To close all doors and windows (of a place) securely.

(idiomatic) To come into conflict.

The technique of twisting the ankle of someone already down, in order to keep them down, under the painful threat of an injury to their ankle that will mar them for life.

plural of lock in

(astronomy) Subject to tidal locking.

(computing) A lock key on a computer keyboard, which, when pressed, causes all subsequently typed letters to be capitalised except those typed while holding the shift key.