Source : Webster's Revised Unabridged Dictionary (1913)

Talus \Ta"lus\, n.; pl. {Tali}. [L., the ankle, the ankle bone.]
   1. (Anat.) The astragalus.

   2. (Surg.) A variety of clubfoot ({Talipes calcaneus}). See
      the Note under {Talipes}.

Source : WordNet®

talus
     n 1: a sloping mass of loose rocks at the base of a cliff [syn: {scree}]
     2: the bone in the ankle that articulates with the leg bones to
        form the ankle joint [syn: {anklebone}, {astragal}, {astragalus}]
     [also: {tali} (pl)]

tali
     See {talus}