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cross talk

or cross-talk, cross·talk

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noun
  1. interference heard on a telephone or radio because of unintentional coupling to another communication channel.
  2. incidental conversation; chatter, as opposed to formal discussion: The meeting was slowed by cross talk between board members.
  3. British. witty, fast-paced dialogue, especially in a play, comic act, etc.; repartee.
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Origin of cross talk

First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for crosstalk

crosstalk

noun
  1. unwanted signals in one channel of a communications system as a result of a transfer of energy from one or more other channels
  2. British rapid or witty talk or conversation
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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