The crossword solution for the term 'SESAME SAYER' is 'ALIBABA', a character from the classic Middle Eastern folk tale, 'Ali Baba and the Forty Thieves'. He is a poor woodcutter who discovers a hidden cave filled with treasure, guarded by a magical phrase: 'Open Sesame'. This phrase is used to open the door to the cave, and is also used as a metaphor for unlocking hidden knowledge or secrets.