Hallux is the medical term for the big TOE. It is the first digit of the foot and is located at the base of the toes. The crossword solutions for Hallux are TOE (3 letters) and BIGTOE (6 letters). The term TOE is an abbreviation for the medical term tarsal-metatarsal joint, which is the joint between the tarsal bones of the foot and the metatarsal bones of the toes. BIGTOE is a more specific term for the hallux, as it refers to the largest TOE on the foot.