Where does “Kosofo” come from?

Kosofo (Yoruba) comes from English Kosovo, from Serbo-Croatian Косово поље, from Serbo-Croatian косовa, from Serbo-Croatian кос, from Proto-Slavic kosъ, from Proto-Slavic kopsъ.

Ancestry of “Kosofo”, step by step

StepLanguageWordMeaning
1EnglishKosovoConsidered by the Republic of Serbia to be one of its two autonomous provinces
2Serbo-CroatianКосово пољеblackbirds’ field
3Serbo-Croatianкосовa—
4Serbo-Croatianкосslant, inclined, skew; blackbird
5Proto-Slavickosъblackbird; skew, slanted
6Proto-Slavickopsъ—
Every word from Proto-Slavic kopsъ →Every word from Proto-Slavic kosъ →Every word from Serbo-Croatian кос →