Proto-IE: *t[e]rn-
Meaning: crown of the head
Hittite: tarna- 'crown of the head' (after Poetto 1976)
Tokharian: B tarne 'crown of the head, summit'
Other Iranian: Sak. tāra-, tāri-, Pers. tār(e), Yazg. tern 'crown of the head'
Russ. meaning: макушка
References: Adams 281.