check lock

check lock

A small lock whose function is to check the bolt of a larger lock that secures a door.
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References in periodicals archive ?
I'd urge people to check locks and make sure they are secure.
They asked the constables what they were doing and were told they had been lent the car to check locks and bolts on doors and shops and said they had permission to use the car from the owner Clifford Allen.
Open and shut windows and doors and check locks for security.