lock (Noun) — A fastener fitted to a door or drawer to keep it firmly closed.
lock (Noun) — A strand or cluster of hair.
lock (Noun) — A mechanism that detonates the charge of a gun.
lock (Noun) — Enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it.
lock (Noun) — A restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key.
lock (Noun) — Any wrestling hold in which some part of the opponent's body is twisted or pressured.
lock (Verb) — Fasten with a lock. ex. "lock the bike to the fence"
lock (Verb) — Keep engaged. ex. "locked the gears"
lock (Verb) — Become rigid or immoveable. ex. "The therapist noticed that the patient's knees tended to lock in this exercise"
lock (Verb) — Hold in a locking position. ex. "He locked his hands around her neck"
lock (Verb) — Become engaged or intermeshed with one another. ex. "They were locked in embrace"
lock (Verb) — Hold fast (in a certain state). ex. "He was locked in a laughing fit"
lock (Verb) — Place in a place where something cannot be removed or someone cannot escape. ex. "The parents locked her daughter up for the weekend" ex. "She locked her jewels in the safe"
lock (Verb) — Pass by means through a lock in a waterway.
lock (Verb) — Build locks in order to facilitate the navigation of vessels.