Definition of: sesame

(ses′ə·mē) noun
An East Indian herb (Sesamum indicum), containing seeds which are used as food and as a source of the pale yellow sesame oil, used as an emollient.
—open sesame A charm to secure admission, originally to the robbers' cave in the story of Ali Baba and the Forty Thieves in the Arabian Nights. [<F sésame <L sesamum, sesama <Gk. sēsamon, sēsamē, prob. <an Oriental source]