sartorius

noun

1. a muscle in the thigh that helps to rotate the leg into the sitting position assumed by a tailor; the longest muscle in the human body

   noun.body

   Synonyms musculus sartorius sartorius muscle

   Source: WordNet 3.0

2. A muscle of the thigh, called the <i>tailor's muscle</i>, which arises from the hip bone and is inserted just below the knee. So named because its contraction was supposed to produce the position of the legs assumed by the tailor in sitting.

   noun

   Source: webster1913