tars-, tarso-

(Greek > Latin: ankle, tarsal plate of the eyelid; from Greek tarsos, frame of wickerwork; broad, flat surface, as also in tarsos podos, the flat of the foot, instep of the foot; the edge of the eyelid)

Relating to or pertaining to both the tibia and the tarsus (ankle; the bones or cartilages of the part of the foot between the metatarsus and the leg, consisting in people of seven short bones); such as, the tibiotarsal articulation (junction of two or more bones).
The main bone of a bird's lower leg, formed by a fusion of the tibia and some of the bones of the tarsus.
A “strange-ankle lizard” from Late Cretaceous Argentina. Named by Argentinian paleontologists Rubén Martinez, Olga Giménez, Rodriguez, and Graciela Bochatey in 1986.