a mechanism for keeping a door, window, lid, or container fastened, typically operated by a key.
Example: the key turned firmly in the lock
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.
Example: 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.
Example: all of this makes him a lock to make the Hall of Fame
a mechanism for exploding the charge of a gun.
verb
fasten or secure (something) with a lock.
Example: she closed and locked her desk
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.
Example: my computer is locked and I've forgotten my login info
make or become rigidly fixed or immovable.
Example: he locked his hands behind her neck
go through a lock on a canal.
Example: we locked through at Moore Haven
noun
a piece of a person's hair that coils or hangs together.
