Where does “Kolozsvár” come from?

Kolozsvár (Hungarian) comes from Hungarian vár, from Proto-Ugric warɜ- — to guard, wait.

Ancestry of “Kolozsvár”, step by step

Step	Language	Word	Meaning
1	Hungarian	vár	castle, fortress; citadel; to wait for someone or...
2	Proto-Ugric	warɜ-	to guard, wait