- Oui is defined as the French word for yes.
An example of oui is what a hungry person would say in France if someone asked if he wanted food.
oui definition by Webster's New World
oui - Computer Definition
(Organizational Unique Identifier) The part of the MAC address that identifies the vendor of the network adapter. The OUI is the first three bytes of the six-byte field and is administered by the IEEE. See MAC layer.