gluteus maximus

[mak-suh-muh s]
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noun, plural glutei max·i·mi [mak-suh-mahy] /ˈmæk səˌmaɪ/.
  1. the broad, thick, outermost muscle of the buttocks, involved in the rotation and extension of the thigh.
  2. Facetious. the buttocks.

Origin of gluteus maximus

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