Ali Baba

[ah-lee bah-bah, al-ee bab-uh]
noun
  1. the poor woodcutter, hero of a tale in The Arabian Nights' Entertainments, who uses the magic words “Open sesame” to open the door to the cave in which the Forty Thieves had hidden their treasure.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for ali baba

Ali Baba

noun
  1. (in The Arabian Nights' Entertainments) a poor woodcutter who discovers that the magic words "open sesame" will open the doors of the cave containing the treasure of the Forty Thieves
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ali baba in Culture

Ali Baba

[(ah-lee bah-buh, al-ee bab-uh)]

The title character in “Ali Baba and the Forty Thieves,” a story from the Arabian Nights. Ali Baba gains the treasure of the thieves, which they keep in a cave with a magical entrance.

Note

Ali Baba opens the door of the thieves' cave with the magical password “Open, sesame.”
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.