Yes, creole is a Scrabble word!

Adjective

1. Of or relating to a language that arises from contact between two other languages and has features of both

2. Of or relating to or characteristic of native-born persons of French descent in Louisiana

Noun

1. A person of European descent born in the West Indies or Latin America

2. A person descended from French ancestors in southern United States (especially Louisiana)

3. A mother tongue that originates from contact between two languages