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Phrase(s): hack something up 1. Lit. to chop something up into pieces. (Refers often to wood.) • Hack all this old furniture up, and we’ll burn it in the fireplace. • Hack up this stuff, and we’ll burn it. 2. Fig. to damage or mangle something. • Who hacked my windowsill up? • Who hacked up my table?
McGrawhill's American Idioms And Phrasal Verbs