The Collaborative International Dictionary of English v.0.48:
ballup \ballup\ n. same as balls-up. [British] Syn: balls-up, cockup, mess-up, foul-up. [WordNet 1.5]WordNet (r) 3.0 (2006):
ballup n 1: something badly botched or muddled [syn: ballup, balls- up, cockup, mess-up]