The Collaborative International Dictionary
Glutaeus
Glutaeus \Glu*t[ae]"us\, n. [NL. See Gluteal.] (Anat.) The great muscle of the buttock in man and most mammals, and the corresponding muscle in many lower animals.
Note: In man, the glut[ae]us is composed of three distinct parts, which extend and abduct the thigh, and help support the body in standing.
Wiktionary
glutaeus
n. (alternative form of gluteus English)