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open sesame Definition

open ses·ame (ses′ə mē′)

noun

  1. magic words spoken to open the door of the thieves' den in the story of Ali Baba in The Arabian Nights
  2. any unfailing means of gaining admission or achieving some other end

open sesame* Synonyms

open sesame*

n.

means of admission, code, sign; see key 2, password.