from
The Collaborative International Dictionary of English v.0.48
gluteus \glu*te"us\, glutaeus \glu*t[ae]"us\, n. [NL. See
{Gluteal}.] (Anat.)
Any of several muscles in the buttocks of man and most
mammals, especially the great muscle of the buttock (the
{gluteus maximus}); also, the corresponding muscle in many
lower animals.
[1913 Webster +PJC]
Note: In man, the gluteus is composed of three distinct
parts, which extend and abduct the thigh, and help
support the body in standing.
[1913 Webster]