lock1 [läk]
[ME < OE loc, a bolt, bar, enclosure, prison, akin to Ger loch, a hole, ON lok, a lid, prob. < IE base * leug-, to bend > Gr lygos, supple twig, L luctȧri, to struggle]
1. a mechanical device furnished with a bolt and, usually, a spring, for fastening a door, strongbox, etc. by means of a key or combination
2. anything that fastens something else and prevents it from opening, turning, etc.
3. a locking together; jam
4. an enclosed part of a canal, waterway, etc. equipped with gates so that the level of the water can be changed to raise or lower boats from one level to another
5. the mechanism of a firearm used to explode the ammunition charge; gunlock
6. AIR LOCK (sense 1)
7. Slang a certainty; sure thing [our team is a lock to win the title]
8. Wrestling a hold in which a part of the opponent's body is firmly gripped [armlock]
1. to fasten (a door, trunk, etc.) by means of a lock
2. to keep from going in or out; shut (up, in or out); confine [locked in jail]
3. to fit closely; link; intertwine [to lock arms]
4. to embrace tightly
5. to jam or force together so as to make immovable [locked gears, locked brakes]
6. to put in a fixed position [a throttle locked in the idle position ]
7. to equip (a canal, etc.) with a lock or locks
8. to move or pass (a ship) through a lock
9. Printing to fasten (type elements) in a chase or on the bed of a press by means of quoins: often with up
1. to become locked
2. to be capable of being locked
3. to intertwine or interlock; link together
4. to close tightly and firmly [his jaws locked]
5. to jam, as gears
6. to pass through the locks of a canal
have a lock on
Slang to be sure of winning, gaining, or controlling [the other party has a lock on that Senate seat]
lock away
to store or safeguard in a locked box, container, etc.
lock on
Aeron. to track and automatically follow a target, as by radar
lock out
1. to shut out by or as by locking the door against
2. to keep (workers) from a place of employment in seeking to force terms upon them
lock, stock, and barrel
[with reference to the main parts of a gun] Informal completely; entirely
lock up
1. to fasten the doors of (a house, etc.) by means of locks
2. to enclose or store in a locked container
3. to put in jail
4. to make certain to have the result one wants [to have an election locked up]
under lock and key
locked up; safely put away
lock2 [läk]
[ME lokke < OE loc (akin to Ger locke): basic sense “a bend, twist”: IE base as in LOCK1]
1. a curl, tress, or ringlet of hair
2. [pl.] Old Poet. the hair of the head
3. a tuft of wool, cotton, etc.

English World dictionary. . 2014.

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