mailbag

[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.
Origin
1805-15; mail1 + bag
Examples from the web for mailbag
  • Thanks to everyone who responded to the mailbag request this week.
  • Radiosondes are easy to recognize, and each one has its own addressed, postage-paid return mailbag.
British Dictionary definitions for mailbag

mailbag

/ˈmeɪlˌbæɡ/
noun
1.
a large bag used for transporting or delivering mail
Word Origin and History for mailbag
n.

also mail-bag, 1794, from mail (n.1) + bag (n.).