Proto-IE: *twak-
Meaning: skin, hide
Hittite: twekka- (twikka-) c. `Körper, Person, selbst' (Friedrich 226)
Old Indian: tvacas- `skin' (in comp. as wie hiraṇya-tvacas-), {tvacasya- in der Haut befindlich}, tvaca- n., tvác- f. `skin, hide, bark, peel'
Old Greek: sákos n. `Schild (aus Leder)' (Cretan word acc. to AB 1096)
Russ. meaning: кожа, шкура