Definition of "malleolus" [‖Mal•le•o•lus]

• 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Gunn, Norman, 1355, very probably has a fracture of the left internal malleolus, but has had no treatment for fifteen days and has not been X-rayed."
• "In fifteen minutes the ankle experienced complete absence of swelling and the medial malleolus ankle bone previously not seen became visible."
• "The microphones did not pick up the fracture of her medial malleolus."