malleolus

noun, plural mal·le·o·li [muh–lee–uh-lahy] /məˈli əˌlaɪ/. Anatomy.

1. the bony protuberance on either side of the ankle, at the lower end of the fibula or of the tibia.

noun plural -li (-ˌlaɪ)

1. either of two rounded bony projections of the tibia and fibula on the sides of each ankle joint

n.bone knob at the ankle, 1690s, from Latin malleolus, diminutive of malleus “a hammer” (see mallet). Anatomical use is said to date to Andreas Vesalius (1514-1564). n. pl. mal•le•o•li (-lī′)

1. A rounded bony prominence, such as those on either side of the ankle joint.