Bool (first appeared in Lisey's Story)

Bool is mentioned in the following books:

Everything's Eventual (Mar 2002)

He snapped the cylinder back in with a flick of his wrist, then slipped the short barrel into his mouth. It tasted of oil and metal. He thought, Here I SIT, about to COOL it, my plan to EAT a fuckin’ BOOL-it.
- All That You Love Will Be Carried Away

The Dark Tower IV: Wizard and Glass (Nov 1997)

Flagg yells bool at Jonas after performing some sleight of hand.

“Abracadabra! Bool! The end! Now,” the man in black went on, sipping his wine delicately, “if we have finished the tiresome formalities . . .”
- Part 3 / Chapter IV: Roland and Cuthbert