The Hattic word tiuz
Word tiuz
Meaning mountain
Synonyms zīš

Comments
Also ziuz.

Other words that might be of interest
araz ‘earth’, wūr ‘land, country’, munamuna ‘stones’, ziḫar ‘wood, building’, pīp ‘stone’, šaḫḫu ‘ground, bottom’, kantiuz ‘rock, boulder’, pur ‘earth’