In grammar, the placing of a noun or noun phrase next to another that refers to the same thing (We'll take the easiest route, the east ridge, to the top). The word or phrase in apposition is marked off from its antecedent (to which it refers) by a pair of commas.
Green, red, and blue were the colours of the Eritrean People's Liberation Front (EPLF) flag which bore a yellow star at the hoist. Effective date: late 1995.