from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A spring lock that can be opened from the inside by turning a knob but from the outside only with a key.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun doorlock operated by a knob on the inside and a key on the outside


Sorry, no etymologies found.


    Sorry, no example sentences found.


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