lock

Noun

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

• 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

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

Verb

• build locks in order to facilitate the navigation of vessels

• pass by means through a lock in a waterway

• place in a place where something cannot be removed or someone cannot escape
  • The parents locked her daughter up for the weekend
    
  • She locked her jewels in the safe
    

• hold fast (in a certain state)
  • He was locked in a laughing fit
    

• become engaged or intermeshed with one another
  • They were locked in embrace
    

• hold in a locking position
  • He locked his hands around her neck
    

• become rigid or immoveable
  • The therapist noticed that the patient's knees tended to lock in this exercise
    

• keep engaged
  • engaged the gears
    

• fasten with a lock
  • lock the bike to the fence
    

Related words

• Synonyms: 
  ignition lock , lock chamber , curl , ringlet , whorl , lock in , lock away , put away , shut up , shut away , lock up , interlock , interlace , engage , mesh , operate
• Antonyms: 
  unlock , disengage , withdraw