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mailbag

American  
[meyl-bag] / ˈmeɪlˌbæg /

noun

  1. a large bag used by mail carriers for carrying mail, usually equipped with a shoulder strap.

  2. a large bag or pouch used in transporting mail in bulk from general post offices to branch offices, from city to city, etc.

mailbag British  
/ ˈmeɪlˌbæɡ /

noun

  1. a large bag used for transporting or delivering mail

"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

Etymology

Origin of mailbag

First recorded in 1805–15; mail 1 + bag

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Editor’s note: Columnist Charlie Garcia shares select emails and online comments from his virtual mailbag each week.

From MarketWatch • Dec. 5, 2025

Editor’s note: Columnist Charlie Garcia shares select emails from his virtual mailbag every week.

From MarketWatch • Oct. 31, 2025

The mailbag returns for its now bi-weekly appearance in the rejuvenated Sunday baseball section.

From Seattle Times • Apr. 13, 2024

If you notice, it’s no longer being called the Twitter mailbag because, well, it’s no longer called Twitter, it’s called X.

From Seattle Times • Apr. 13, 2024

In the overflow, police also recovered Moishe Walden’s clothes and mailbag.

From "The City Beautiful" by Aden Polydoros

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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