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British Dictionary definitions for sleep through

sleep through

verb (intr, adverb)
  1. informal (of a baby) to sleep all night without waking up
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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

Idioms and Phrases with sleep through

sleep through

1

Sleep without waking for a period of time, usually the night, as in At three months many babies have learned to sleep through. [Mid-1900s]

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2

sleep through something. Fail to pay attention, as in We all slept through the explanation and then had trouble getting the machines started.

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