Barter

[Sarah]

To traffic or trade, by exchanging one commodity for another,in distinction from a sale and purchase, in which money is paid forthe commodities transferred; to truck.

[Sarah]

The way people changed goods before money was invented.

[Cami]

Exchange (goods or services) for other goods or services without using money.

[Zipporah Schumaker]

V. ([-ed]) to [burp] and fart [simultaneously] (at the same time)