" lock "

[Noun]  | "lock" | \ ˈläk \

1: a fastening (as for a door) operated by a key or a combination

2: the mechanism for exploding the charge or cartridge of a firearm

3: an enclosure (as in a canal) with gates at each end used in raising or lowering boats as they pass from level to level

Origin: before 12th century ;

 Middle English lok, from Old English loc; akin to Old High German loh enclosure and perhaps to Old English locc lock of hair;

[Noun]  | "lock" 

1: a tuft, tress, or ringlet of hair

2: the hair of the head

3: a narrow ropelike strand of hair formed by matting, braiding, or twisting : dreadlock

Origin: before 12th century ;

 Middle English lok, from Old English locc; akin to Old High German loc lock, Greek lygos withe, Latin luxus dislocated;

[Noun]  | "lock-in" | \ ˈläk-ˌin \

1: a demonstration in which protestors lock themselves inside a building, factory, etc.

2: a usually supervised social event for young people confined to a space (such as a library or church) often overnight

Origin: 1920 ;

[Noun]  | "lock screen" 

1: a graphical user interface displayed by a device (such as a computer or smartphone) that prevents access to most functions of the device until a certain action (such as swiping one's finger across the screen or entering a predetermined code) is performed

Origin: 1991 ;

[Verb]  | "lock" 

1: to fasten the lock of

2: to make fast with or as if with a lock

3: to fasten in or out or to make secure or inaccessible by or as if by means of locks

Origin: 14th century ;

[Verb]  | "lock" 

1: to form into dreadlocks

[Verb]  | "loc" | \ ˈläk \

1: to form into dreadlocks

Origin: 1992 ;

 Verbal derivative of {see: |lock:3|lock:3} in {see: |dreadlock|dreadlock};

  * Note : The use as a telic or change of state verb may indicate that the verb {lock:2|lock:2} has a role in the derivation.;

[Verb]  | "lock out" 

1: to subject (a body of employees) to a lockout

Origin: 1853 ;

[Adverb]  | "lock, stock, and barrel" 

1: wholly, completely

Origin: 1817 ;

 From the principal parts of a flintlock;

[Phrasal verb]  | "lock away" 

1: to put (something) in a locked container, place, etc.

2: to put (someone) in a locked place (such as a prison) for a long period of time

3: to keep (oneself) alone in a room or place for a long period of time

[Verb]  | "lock" 

[Verb]  | "lock (up)" 

[Verb]  | "lock out" 

[Noun]  | "lock" 

[Phrase]  | "lock horns"