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long arm

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noun
  1. a long pole fitted with any of various devices, as a hook or clamp, for performing tasks otherwise out of reach.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for long arm

long arm

noun informal
  1. power, esp far-reaching powerthe long arm of the law
  2. make a long arm to reach out for something, as from a sitting position
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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