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
Synonymslock chamber
noun a restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key
Synonymsignition lock
verb become rigid or immoveable
Oppositesunlock
verb become engaged or intermeshed with one another
Synonymsinterlock
verb place in a place where something cannot be removed or someone cannot escape
Source: WordNet 3.1, Princeton University
