open sesame noun 1phrase 1forms 1 noun1 •Any successful means of achieving a result, especially means that are magical or technical, or otherwise beyond the understanding of most people."The blue topaz was bought by me, from the chieftain of the tribe to which Quacal belongs. It is an ‘open sesame’ to his favor." — 1899 phrase1 •open up (especially referring to doors) formsopen sesames
