Mailman (noun)

1. A man who delivers mail, specifically one who delivers mail on foot or by vehicle to a specific route or area.
2. A man who works for the postal service delivering mail.

Origin:

A compound of mail ("letters, packages") + man ("a person").

Examples:

1. The mailman delivered the package to the wrong address.
2. The mailman always greeted the children on his route.
3. The mailman's uniform was blue.
4. The mailman was running late because of heavy traffic.
5. He was the mailman for over 30 years.