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 itlock chamber
noun · a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the keyignition lock
verb · keep engaged“engaged the gears”
verb · hold in a locking position“He locked his hands around her neck”
verb · become engaged or intermeshed with one another“They were locked in embrace”
verb · place in a place where something cannot be removed or someone cannot escape“The parents locked her daughter up for the weekend”