<p><strong>noun</strong></p><ul><li>plural fibulae [fib-yuh-lee] or fibulas:<ul><li>Anatomy: the outer and thinner of the two bones of the human leg, extending from the knee to the ankle.</li><li>Zoology: a corresponding bone, often rudimentary or ankylosed with the tibia, of the leg or hind limb of an animal.</li><li>a clasp or brooch, often ornamented, used by the ancient Greeks and Romans.</li></ul></li></ul>