tomorroweek Share definition Flag Another way of saying the day after one week exactly. Usually used by lazy individuals who don't want to waste energy saying extra words. "When are you gonna call that girl back?" "Oh, I guess I'll do it tomorroweek." tomorroweek by sean d March 26, 2005 0 0 Get merch Get the tomorroweek mug. Buy Now — $32.95 See more merch