noun pl. tarsi tar′si′ (-sī′)

1. Anat.
   1. the human ankle, consisting of seven bones between the tibia and metatarsus
   2. the small plate of connective tissue stiffening the eyelid
2. Zool.
   1. a group of bones in the ankle region of the hind limbs of tetrapods
   2. tarsometatarsus
   3. the fifth segment from the base of an insect leg

Etymology: ModL < Gr tarsos, flat of the foot, any flat surface, orig. a wickerwork frame for drying fruits or cheeses < IE base *ters-, to dry > thirst, L torridus