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Definition of open sesame noun from the Oxford Advanced Learner's Dictionary

open sesame

noun
 
/ˌəʊpən ˈsesəmi/
 
/ˌəʊpən ˈsesəmi/
[singular]
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  1. an easy way to gain or achieve something that is usually very difficult to get
    • Academic success is not always an open sesame to a well-paid job.
    Topics Successc2
    Word OriginFrom the fairy tale Ali Baba and the Forty Thieves, in which the magic words open sesame had to be said to open the cave where the thieves kept their treasure.
See open sesame in the Oxford Advanced American Dictionary
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