Where does “мравиште” come from?

мравиште (Macedonian) comes from Macedonian мрава, from Proto-Slavic morvъ, from Proto-Balto-Slavic *marwís, from Proto-Indo-European morwís — ant.

Ancestry of “мравиште”, step by step

StepLanguageWordMeaning
1Macedonianмраваant
2Proto-Slavicmorvъant
3Proto-Balto-Slavic*marwísant
4Proto-Indo-Europeanmorwísant
Every word from Proto-Indo-European morwís →Every word from Proto-Balto-Slavic *marwís →Every word from Proto-Slavic morvъ →