What is "quadricep"

Usage examples of "quadricep".

Putting her arms across their shoulders, she allowed them to carry her out, using her legs whenever recalcitrant quadriceps allowed.

The boring mechanics of how your body works are all too clear, your lungs are sucking air to put in your blood, your heart pumps blood to your muscles, your hamstrings pull themselves short, cramping to pull your legs up behind you, your quadriceps cramp to put your knees out in front of you.