duplex lock
noun
a lock capable of being opened either by a master key or a change key, each operating its own mechanism.
Words nearby duplex lock
duplex, duplex apartment, duplex chain, duplex house, duplex kidney, duplex lock, duplex process, duplex pump, duplex uterus, duplexer, duplicable
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020