Tarsus

Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 450

tar's us, n. (Anat.) That part of the foot between the leg and metatarsus: it contains 7 bones of heel, instep, and ankle: see iar0. Tart, Skeleton. tart, a. Sharp to the taste; acidulous; keen; severe. — Tart'ly, adv. — In a tart manner; sourly; sharply. — Tart'ne , n.