a narrow muscle of the thigh, the longest in the human body, that passes obliquely across the front of the thigh and helps rotate the leg to the cross-legged position
See sartorius in American Heritage Dictionary 4
(sär-tôrˈē-əs, -tōrˈ-)
nounpl.sar·to·ri·i(-tôrˈē-ī, -tōrˈ-)
A flat narrow thigh muscle, the longest of the human anatomy, crossing the front of the thigh obliquely from the hip to the inner side of the tibia.