Definition of mailbag
1 : a letter carrier's shoulder bag
2 : a pouch used in the shipment of mail
First Known Use of mailbag
MAILBAG Defined for English Language Learners
Definition of mailbag for English Language Learners
: a large bag used for sending letters and packages in a truck, airplane, etc.
: a bag carried by a person who delivers the mail
Seen and Heard
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