(computing) A key on a standard extended keyboard which, when pressed, toggles the keys of the numeric keypad between cursor control functions and numeric digits.

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 situated between an enclosed basin or a canal and the tide water of a harbor or river, when they are on different levels, so that craft can pass either way at all times of the tide

(firearms) The time, usually measured in milliseconds, from when the trigger is pulled until the firing pin strikes the primer.

(business, economics) An event in which an employer bars employees from working as a tactic in negotiating terms of employment, particularly in response to a strike or threat to strike.

To inadvertently prevent (a person, particularly oneself) from entering a place, by leaving it locked. / (computing) To prevent from accessing a data structure.

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

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

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

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