'mess-up' definitions:

Definition of 'mess-up'

(from WordNet)
noun
Something badly botched or muddled [syn: ballup, balls- up, cockup, mess-up]

Definition of 'mess-up'

From: GCIDE
  • mess-up \mess-up\ n. Something badly botched or muddled. [British]
  • Syn: ballup, balls-up, cockup. [WordNet 1.5]