"talus" in the noun sense
1. talus, scree
a sloping mass of loose rocks at the base of a cliff
2. anklebone, astragal, astragalus, talus
the bone in the ankle that articulates with the leg bones to form the ankle joint
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License