Wakashan wa·kas·han uncommon noun 1. a member of one of the peoples in British Columbia and Washington who speak the Wakashan language 2. a family of North American Indian languages of British Columbia and Washington SynonymsWakashan language Related words Word family Wakashan language Broader terms MosanIndian Narrower terms KwakiutlNootka WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.