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British Dictionary definitions for arse about

arse about

arse around, US and Canadian ass about or US and Canadian ass around

verb
  1. (intr, adverb) slang to play the fool; act stupidly, esp in an irritating manner
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012