The term 'Poolroom Need' refers to three items that are essential for playing pool: CHALK, CUE, and RACK. CHALK is a powdery substance used to coat the tip of the CUE stick, which helps with accuracy when shooting. A CUE is a long, slender stick used to strike the balls on the pool table. Finally, a RACK is a device used to arrange the balls in a triangle at the start of the game. Together, these three items are necessary for a successful game of pool.