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open sesame

any marvelously effective means for bringing about a desired result:
Wealth is the open sesame to happiness.
Origin of open sesame
1785-95; from the use of these words by Ali Baba to open the door of the robbers' den Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for open-sesame
Historical Examples
  • This open-sesame for the iron gates was given to each person with the warning that it must not be forgotten.

    A Trip to the Orient Robert Urie Jacob
  • She had expected the name to act as an open-sesame, and it was not even recognised.

    The Daughters of a Genius Mrs. George de Horne Vaizey
  • The conserje in the Patio de la Monteria scanned the open-sesame.

    The Story of Seville Walter M. Gallichan
  • There are a dozen men in the city, a line from whom would be an open-sesame.

British Dictionary definitions for open-sesame

open sesame

a very successful means of achieving a result
Word Origin
from the magical words used by Ali Baba in The Arabian Nights' Entertainments to open the door of the robbers' den
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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