Definition of "talus" [ta•lus]

• The bone of the ankle that articulates with the tibia and fibula to form the ankle joint. Also called anklebone, astragalus. (noun)
• The ankle. (noun)
• A sloping mass of rock debris at the base of a cliff. (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.

• "Opposable big toes and nail-bearing tips on the fingers and toes confirm the fossil is a primate, and a foot bone called the talus bone links Ida directly to humans, Hurum said."
• "—The talus is the second largest of the tarsal bones."
• "This fort is what engineers call a talus, being, as I suppose, the exact area, very nearly, of the top of a cliff overlooking the town."