Where does “Sierra Negra” come from?

Sierra Negra (Spanish) comes from Spanish negra, from Spanish negro, from Latin nigrum, from Latin niger, from Proto-Indo-European nókʷts, from Proto-Indo-European negʷ- — bare, naked.

Ancestry of “Sierra Negra”, step by step

Sierra Negra traces back through two separate lines of ancestry.

via Spanish negra

StepLanguageWordMeaning
1Spanishnegrafeminine singular of negro; female equivalent of...
2Spanishnegroblack; a black person; ghost writer
3Latinnigrummasculine accusative singular of niger; neuter...
4Latinnigerwan, shining black; bad; evil; ill-omened
5Proto-Indo-Europeannókʷtsnight
6Proto-Indo-Europeannegʷ-bare, naked

via Spanish Sierra

StepLanguageWordMeaning
1SpanishSierrasaw tool
2Latinserraa saw; a kind of sawfish; a serrated battle order
3Proto-Italicserzā
4Proto-Indo-Europeansers-eh₂
5Proto-Indo-Europeansers-to cut off
6Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together
Every word from Proto-Indo-European negʷ-