A po box is a numbered box at a post office used as an address. Write to a po box.
It keeps a real address private, which suits a small business run from home. A po box cannot receive most couriers, since they need somebody to sign.
1nounpo boxA numbered box at a post office used as an address.
“The advertisement gave only a po box and a phone number.”
po box is an address.
Practised in Bank & Post Office