gluteus maximus

[ mak-suh-muh s ]
/ ˈmæk sə məs /

noun, plural glutei max·i·mi [mak-suh-mahy] /ˈmæk səˌmaɪ/.

the broad, thick, outermost muscle of the buttocks, involved in the rotation and extension of the thigh.
Facetious. the buttocks.

Origin of gluteus maximus

1900–05; < New Latin: largest gluteus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019