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lineman's pliers

American  

plural noun

  1. pliers with reinforced pincers and insulated handles, used by electricians in working with cable and other heavy wires.

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.