Merriam-Webster Collegiate Dictionary - talus

 I. noun  Etymology: French, from Middle French, probably from Vulgar Latin *talutum side, slope; akin to Latin talutium slope indicating presence of gold under the soil  Date: 1645  1. a slope formed especially by an accumulation of rock debris  2. rock debris at the base of a cliff  II. noun  (plural tali)  Etymology: New Latin, from Latin  Date: 1578  1. the human tarsal bone that bears the weight of the body and that together with the tibia and fibula forms the ankle joint  2. the entire ankle