mal·le·o·lus (mə-lē'ə-ləs) n.
pl.mal·le·o·li (-lī') Either of the two rounded protuberances on each side of the ankle, the inner formed by a projection of the tibia and the outer by a projection of the fibula.
[New Latin, from Latin, diminutive of malleus, hammer; see melə- in Indo-European roots.] mal·le'o·lar (-ə-lər) adj.