Multi Lock Opener
Multi lock opener crossword clue. THE GIANT CROSSWORD Daily Mail on 13 May 2017, 11 leters 2 word (8,3).
The answer is SKELETON KEY
A skeleton key (also known as a passkey) is a type of master key in which the serrated edge has been filed down so that it can open numerous locks, most commonly the warded lock. The term derives from the fact that the key has been reduced to its essential parts.
In a broader sense the term can be used synonymously with master key to refer to any key, keycard or other device capable of opening a variety of locks.
In U.S. English, “skeleton key” is also sometimes misapplied to mean any lever lock key or antique key.