

Please lock the door when you leave.
To secure something with a device that prevents it from being opened.
Don't forget to lock your car.
She always locks her bike at the rack.
He locked the safe before leaving.
lock the door
lock the window
lock the gate
secure
fasten
seal
I need to find my house key to open the lock.
A device used to secure something, usually with a key or combination.
Please remember to lock the door when you leave.
He turned the lock to secure the gate.
She lost the key to her bike lock.
front door lock
padlock
deadbolt lock
fastener
bolt
latch