popliteal muscle

n.
  1. A muscle with origin from the lateral condyle of the femur, with insertion into the posterior surface of the tibia, with nerve supply from the tibial nerve, and whose action flexes the leg and rotates it medially.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.