Tarsi meaning : The part of the foot between the tibia and fibula and the metatarsus. Any of the seven bones in this part of the foot. A plate of dense connective tissue found in each eyelid, attached to either the superior tarsal muscle (in the upper eyelid) or inferior tarsal muscle (lower eyelid), which aid with sympathetic control. In insects and other arthropods, any of a series of articulations in the true foot; the last joint forming the foot in spiders.