From Wiktionary, the free dictionary
Affixed twaṅ, toṅ (“reverence, respect, awe”) + ka-.
katwaṅ
- object of reverence, respect or awe
- king
- queen
- "katwaṅ" in P.J. Zoetmulder with the collaboration of S.O. Robson, Old Javanese-English Dictionary. 's-Gravenhage: M. Nijhoff, 1982.