Mailman vs. Postman

Mailman and Postman Definitions
Mailman
A man who carries and delivers mail. Also called postman.
Postman
See mailman.
Mailman
(North America) someone who delivers mail to, and/or collects mail from, residential or commercial addresses, or from public mailboxes
Postman
Someone who delivers the post (mail) to, and/or collects the post from, residential or commercial addresses, or from public mailboxes.
Mailman
A man who delivers the mail. A male mail carrier.
Postman
One of the two most experienced barristers in the Court of Exchequer, who have precedence in motions, so called from the place where he sits, the other of the two being the tubman.
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Mailman
A man who delivers the mail
Postman
A post or courier; a letter carrier.
Postman
One of the two most experienced barristers in the Court of Exchequer, who have precedence in motions; - so called from the place where he sits. The other of the two is called the tubman.
Postman
A man who delivers the mail