popliteus
noun
pop·li·te·us
| \ ˌpäp-lə-ˈtē-əs also päp-ˈlit-ē-əs\
plural poplitei\ -ˌī 
\
\
Medical Definition of popliteus
: a flat muscle that originates from the lateral condyle of the femur, forms part of the floor of the popliteal space, and functions to flex the leg and rotate the femur medially