The term 'Red Indian Language' refers to the languages spoken by Native American tribes. The four crossword solutions for this term are Iroquois (8 letters), SIOUAN (6 letters), Pawnee (6 letters) and CHEROKEE (8 letters). Iroquois is a language spoken by the Iroquois Confederacy, which is a group of six Native American nations located in the Northeastern United States and Canada. SIOUAN is a language spoken by the SIOUAN-speaking tribes, which are located in the Great Plains and the Southeastern United States. Pawnee is a language spoken by the Pawnee people, who are located in Oklahoma and Nebraska. CHEROKEE is a language spoken by the CHEROKEE Nation, which is located in the Southeastern United States.