tibia

noun4

1. •
   The inner and usually the larger of the two bones of the leg or hind limb below the knee, the shinbone.

   • Her anterior cruciate ligament (ACL) and medial collateral ligament (MCL) are torn and Vonn has a lateral fracture of the tibial plateau, the upper end of the tibia or shin bone. — 2013
2. •
   The second segment from the end of an insect's leg, between the femur and tarsus.
3. •
   The third segment from the end of an arachnid's leg, between the patella and metatarsus.
4. •
   A musical instrument of the flute kind, originally made of the leg bone of an animal.