- magic words spoken to open the door of the thieves' den in the story of Ali Baba in The Arabian Nights
- any unfailing means of gaining admission or achieving some other end
See open sesame in American Heritage Dictionary 4
A simple, trusty means of attaining a goal.
Origin: From the magical formula Open Sesame used by Ali Baba in the Arabian Nights to open the door of the robbers' cave
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