noun

• (anatomy) The inner and usually the larger of the two bones of the leg or hind limb below the knee, the shinbone
• (entomology) The second segment from the end of an insect's leg, between the femur and tarsus.
• (arachnology) The third segment from the end of an arachnid's leg, between the patella and metatarsus.
• A musical instrument of the flute kind, originally made of the leg bone of an animal.