noun. ['ˈkwɑːdrəˌsɛps'] a muscle of the thigh that extends the leg.
noun. the longest and thickest bone of the human skeleton; extends from the pelvis to the knee.
1. Noun Phrase The stepper especially works the quadriceps femoris muscle which is attached to the kneecap by a tendon, and the vastus intermedialis muscale at the base of the kneecap.
