The Collaborative International Dictionary of English v.0.48:

Tarsus \Tar"sus\, n.; pl. Tarsi. [NL., fr. Gr. ? the flat of
   the foot, the edge of the eyelid. Cf. 2d Tarse.]
   1. (Anat.)
      (a) The ankle; the bones or cartilages of the part of the
          foot between the metatarsus and the leg, consisting in
          man of seven short bones.
      (b) A plate of dense connective tissue or cartilage in the
          eyelid of man and many animals; -- called also tarsal
          cartilage, and tarsal plate.
          [1913 Webster]

   2. (Zool.) The foot of an insect or a crustacean. It usually
      consists of form two to five joints.
      [1913 Webster]

WordNet (r) 3.0 (2006):

tarsus
    n 1: the part of the foot of a vertebrate between the metatarsus
         and the leg; in human beings the bones of the ankle and
         heel collectively

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "tarsus":
   ankle, bayonet legs, bowlegs, calf, cnemis, drumstick, foreleg,
   gamb, gambrel, gigot, ham, hind leg, hock, jamb, knee, leg, limb,
   podite, popliteal space, scissor-legs, shank, shin, stems, stumps,
   trotters



Easton's 1897 Bible Dictionary:

Tarsus
   the chief city of Cilicia. It was distinguished for its wealth
   and for its schools of learning, in which it rivalled, nay,
   excelled even Athens and Alexandria, and hence was spoken of as
   "no mean city." It was the native place of the Apostle Paul
   (Acts 21:39). It stood on the banks of the river Cydnus, about
   12 miles north of the Mediterranean. It is said to have been
   founded by Sardanapalus, king of Assyria. It is now a filthy,
   ruinous Turkish town, called Tersous. (See PAUL.)


Hitchcock's Bible Names Dictionary (late 1800's):

Tarsus, winged; feathered