The Collaborative International Dictionary of English v.0.48:
beat-up \beat-up\ adj. same as beaten-up. Syn: battered, beaten-up, bedraggled, broken-down, dilapidated, ramshackle, tumble-down, unsound. [WordNet 1.5]WordNet (r) 3.0 (2006):
beat-up adj 1: damaged by blows or hard usage; "a battered old car"; "the beaten-up old Ford" [syn: battered, beat-up, beaten-up]