Synonyms for lock

noun

• 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 strand or cluster of hair
• a fastener fitted to a door or drawer to keep it firmly closed
• a mechanism that detonates the charge of a gun
• any wrestling hold in which some part of the opponent's body is twisted or pressured

verb

• place in a place where something cannot be removed or someone cannot escape
• hold in a locking position
• keep engaged
• become engaged or intermeshed with one another
• become rigid or immoveable
• build locks in order to facilitate the navigation of vessels
• fasten with a lock
• hold fast (in a certain state)
• pass by means through a lock in a waterway