Synonyms for Algonkian (same or very similar meaning)
WordNet sense 1 (a member of a North American Indian people in the Ottawa river valley of Ontario and Quebec):
Algonkin
WordNet sense 2 (of or relating to an Algonquian tribe or its people or language):
Algonquian, Algonquin
From the ODE community, based on WordNet
add/edit