lock

any wrestling hold in which some part of the opponent's body is twisted or pressured

a fastener fitted to a door or drawer to keep it firmly closed

a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key

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

a mechanism that detonates the charge of a gun

a strand or cluster of hair

become rigid or immoveable

“The therapist noticed that the patient's knees tended to lock in this exercise”

place in a place where something cannot be removed or someone cannot escape

“The parents locked her daughter up for the weekend”

fasten with a lock

“lock the bike to the fence”

keep engaged

“engaged the gears”

become engaged or intermeshed with one another

“They were locked in embrace”

hold in a locking position

“He locked his hands around her neck”

build locks in order to facilitate the navigation of vessels

hold fast (in a certain state)

“He was locked in a laughing fit”

pass by means through a lock in a waterway