He gropes gently back and forth and-so quickly it seems miraculous-extracts a long bone the color of mahogany: a human femur.
It is a long bone, prismatic in form and slightly curved longitudinally.
Among those fossils is a three-inch fragment of the shoulder end of the bird's humerus, the long bone of the upper arm.
Nearby is a long bone, a femur probably, that has been gnawed to a bloodless white.
long bone in Medicine
long bonen. One of the elongated bones of the extremities, consisting of a tubular shaft, which is composed of compact bone surrounding a central marrow-filled cavity, and two expanded portions that usually serve as articulation points.