Where does “ナイチンゲール” come from?

ナイチンゲール (Japanese) comes from English nightingale, from Middle English nyghtyngale, from Middle English nyghtgale, from Old English nihtegale, from Proto-West Germanic nahtigalā, from Proto-West Germanic naht, from Proto-Germanic nahts, from Proto-Indo-European nókʷts — bare, naked.

Ancestry of “ナイチンゲール”, step by step

StepLanguageWordMeaning
1EnglishnightingaleA European songbird, "Luscinia megarhynchos", of...
2Middle Englishnyghtyngalenightingale
3Middle Englishnyghtgalenightingale
4Old Englishnihtegalenightingale
5Proto-West Germanicnahtigalānightingale
6Proto-West Germanicnahtnight
7Proto-Germanicnahtsnight
8Proto-Indo-Europeannókʷtsnight
9Proto-Indo-Europeannegʷ-bare, naked
Every word from Proto-Indo-European negʷ-Every word from Proto-Indo-European nókʷtsEvery word from Proto-Germanic nahts