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dog's age

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noun Northern U.S.
  1. quite a long time: I haven't seen you in a dog's age!
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Origin of dog's age

An Americanism dating back to 1830–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Idioms and Phrases with dog's age

dog's age

see under coon's age.

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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.