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1. The act of locking something up to protect it
   - lockup

1. Fasten with a lock
   "lock the bike to the fence"
    
2. Keep engaged
   "locked the gears"
   - engage, mesh, operate
    
3. Become rigid or immoveable
   "The therapist noticed that the patient's knees tended to lock in this exercise"
    
4. Hold in a locking position
   "He locked his hands around her neck"
   - interlock, interlace
    
5. Become engaged or intermeshed with one another
   "They were locked in embrace"
   - interlock
    
6. Hold fast (in a certain state)
   "He was locked in a laughing fit"
    
7. 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"
   - lock in, lock away, put away, shut up, shut away, lock up
    
8. Pass by means through a lock in a waterway
    
9. Build locks in order to facilitate the navigation of vessels

Derived forms: lockings

See also: lock up, lockage, locker

Type of: bosom, build, confine, construct, displace, embrace, engage, fasten, fix, go across, go through, hold, hug, make, move, overcome, overpower, overtake, overwhelm, pass, protection, secure, squeeze, sweep over, take hold, whelm [archaic]

Antonym: unlock

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