in limbs of vertebrate animals: a long cylindrical bone that contains marrow

a human limb; commonly used to refer to a whole limb but technically only the part of the limb between the knee and ankle

the internal skeleton; bony and cartilaginous structure (especially of vertebrates)

the longest and thickest bone of the human skeleton; extends from the pelvis to the knee

the outer and thinner of the two bones of the human leg between the knee and ankle

the inner and thicker of the two bones of the human leg between the knee and ankle

a human limb; commonly used to refer to a whole limb but technically only the part of the limb between the knee and ankle

the internal skeleton; bony and cartilaginous structure (especially of vertebrates)