Where does “Rostov” come from?

Rostov is an English name for a Russian city, from Russian Росто́в, of uncertain origin.

Ancestry of “Rostov”, step by step

StepLanguageWordMeaning
1Russianростgrowth; growth, increase, rise; height, stature
2Old East Slavicростъ
3Proto-Slavicorstъgrowth
4Proto-Slavicslàvafame; glory; glory, fame
5Proto-Indo-Europeanḱlew-to hear
6Proto-Indo-Europeanḱel-to cover; to incline
Every word from Proto-Indo-European ḱel-Every word from Proto-Indo-European ḱlew-Every word from Proto-Slavic slàva