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lock noun [ lɒk ]

• a mechanism for keeping a door, window, lid, or container fastened, typically operated by a key.
• "the key turned firmly in the lock"
Similar: bolt, catch, fastener, clasp, bar, hasp, latch,
• a short section of a canal or river with gates and sluices at each end which can be opened or closed to change the water level, used for raising and lowering boats.
• "there was a lock every quarter of a mile"
• the turning of the front wheels of a vehicle to change its direction of motion.
• a player in the second row of a scrum.
• a person or thing that is certain to succeed; a certainty.
• "all of this makes him a lock to make the Hall of Fame"
• a mechanism for exploding the charge of a gun.

lock verb

• fasten or secure (something) with a lock.
• "she closed and locked her desk"
Similar: bolt, fasten, bar, secure, make secure, make fast, seal, padlock, latch, chain,
Opposite: unlock, open,
• restrict access to the full functionality or data of (a computer, mobile phone, file, etc.), especially by requiring a user to verify their identity with a passcode or other form of authentication.
• "my computer is locked and I've forgotten my login info"
• make or become rigidly fixed or immovable.
• "he locked his hands behind her neck"
Similar: join, interlock, mesh, engage, link, unite, connect, combine, yoke, mate, couple, become stuck, stick, jam, become/make immovable, become/make rigid,
Opposite: separate, divide,
• go through a lock on a canal.
• "we locked through at Moore Haven"
Origin: Old English loc, of Germanic origin; related to German Loch ‘hole’.

lock noun

• a piece of a person's hair that coils or hangs together.
• "she pushed back a lock of hair"
Similar: tress, tuft, curl, ringlet, kiss-curl, lovelock, forelock, plait, hank, strand, wisp, snippet,
Origin: Old English locc, of Germanic origin; related to Dutch lok, German Locke, possibly also to lock1.

have a lock on

• have total control over.
"he has a lock on much of the political establishment in Georgia"

lock horns

• engage in conflict.
"drug companies are locking horns in a legal battle over patents"

lock, stock, and barrel

• including everything; completely.
"the place is owned lock, stock, and barrel by an oil company"

under lock and key

• securely locked up.
"the rifle was stored under lock and key"

lock away

• imprison someone.
"Edmond is locked away in the island fortress"

lock down

• confine a prisoner to their cell.
"the men were locked down for the usual curfew bedtime"

lock in

• shut someone into a room or space by locking or fastening a door, lid, etc.
"the prisoners are locked in overnight"

lock into

• cause to become caught or involved in something.
"they were now locked into the system"

lock on

• locate and then track a target by radar or similar means.
"the system would then lock on and fire the weapons at the intruder aircraft"

lock out

• keep someone out of a room or building by locking the door.
"she had locked him out of his own house"

lock up

• imprison someone.
"he thought Smart ought to be locked up"



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