Definitions

1. adjective

relating to or used in the delivery of mail, especially by a postal service

“The postal worker sorted the letters and packages for delivery.”

2. noun

a worker or department responsible for delivering mail or packages, especially in a postal service

“The postal service was understaffed during the holiday season.”

3. noun

a place where mail or packages are received or sent, especially a post office or a mailbox

“The postal box was locked, so she couldn’t deposit her mail.”