to fasten sth with a lock; to be fastened with a lock
Did you lock the door?
This suitcase doesn't lock.
to put sth in a safe place and lock it
She locked her passport and money in the safe.
to become or make sth become fixed in one position and unable to move
The brakes locked and the car skidded.
He locked his helmet into position with a click.
to be involved in a difficult situation, an argument, a disagreement, etc.
The two sides are locked into a bitter dispute.
She felt locked in a loveless marriage.
to be held very tightly by sb
They were locked in a passionate embrace.
to prevent computer data from being changed or looked at by sb without permission
These files are locked to protect confidentiality.
to get involved in an argument or a disagreement with sb
The company has locked horns with the unions over proposed pay cuts.
to prevent sb from leaving a place by locking the door
At 9 p.m. the prisoners are locked in for the night.
of a missile , etc.
to find the thing that is being attacked and follow it
to prevent sb from entering a place by locking the door
I'd locked myself out of the house and had to break a window to get in.
of an employer
to refuse to allow workers into their place of work until they agree to particular conditions
to make a building safe by locking the doors and windows
Don't forget to lock up at night.
He locked up the shop and went home.
to put sb in prison
to put sth in a safe place that can be locked
to put money into an investment that you cannot easily turn into cash
Their capital is all locked up in property.
a device that keeps a door, window, lid, etc. shut, usually needing a key to open it
She turned the key in the lock.
a device with a key that prevents a vehicle or machine from being used
a bicycle lock
a steering lock
a state in which the parts of a machine, etc. do not move
on a car, etc.
the amount that the front wheels can be turned in one direction or the other in order to turn the vehicle
I had the steering wheel on full lock (= I had turned it as far as it would turn) .
a section of canal or river with a gate at either end, in which the water level can be changed so that boats can move from one level of the canal or river to another
a few hairs that hang or lie together on your head
John brushed a lock of hair from his eyes.
a person's hair
She shook her long, flowing locks.
a player in the second row of the scrum
total control of sth
One company had a virtual lock on all orange juice sales in the state.
He sold the business lock, stock and barrel.
locked up safely somewhere; in prison
We keep our valuables under lock and key.
I will not rest until the murderer is under lock and key.
to open a lock without a key, using sth such as a piece of wire