Source : Webster's Revised Unabridged Dictionary (1913)

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.