lock

a device for closing something; to close something with a key or code

a mechanism for keeping a door, lid, etc., fastened, typically operated only by a key of a particular form

to secure something with a key or mechanism; to become fixed in position

to fasten with a lock; to secure; to prevent access

a mechanism for keeping a door, container, or object secure

to fasten something securely with a key or device; a fastening device