Oreo /ˈɔɹioʊ/noun 2forms 2phrases 1 noun2 •A cookie made of two wafers joined with a sugary filling, particularly a Nabisco cookie with two alkalized cocoa-powder wafers around a white creme filling.“You can feed, like, an entire city,” he marvels, before salivating over Oreos, Nilla Wafers, jugs of milk, eggs, a sausage wrapped in a pancake on a stick. — 2026 •(US, offensive) A black person who has overly assimilated into white culture, a black race traitor.She's a pure Oreo. You know, like the cookie, black outside and white inside. — 1971 formsOreos · oreos Phrases with Oreo Oreo cookieA black person that appears to the community to embody the social and cultural features of a white person