tibia

n. bone in the lower leg

The tibia is the larger of the two bones in the leg below the knee in vertebrates.
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Tibia /tib·ia/ shin bone; the inner and larger bone of the leg below the knee. It articulates with the femur and head of the fibula above and with [more]Tibia - Community and Resources

Noun
1. the inner and thicker of the two bones of the human leg between the knee and ankle
(synonym) shinbone, shin
(hypernym) leg bone
(part-holonym) leg

n. tibia, shinbone, bone located at the front of the lower leg (Anatomy)