‖n.; pl.Malleoli [ L., dim. of malleus hammer. ] 1. (Anat.) A projection at the distal end of each bone of the leg at the ankle joint. The malleolus of the tibia is the internal projection, that of the fibula the external. [ 1913 Webster ]
2. “ A layer, ” a shoot partly buried in the ground, and there cut halfway through. [ 1913 Webster ]