Where does “penkōin” come from?

penkōin (Marshallese) comes from Marshallese penkō, from English vinegar, from Middle English vynegre, from Old French vinaigre, from Old French aigre, from Vulgar Latin acrus, from Latin ācer, from Latin saccharum — gravel, boulder; boulder; gravel.

Ancestry of “penkōin”, step by step

StepLanguageWordMeaning
1Marshallesepenkōvinegar
2EnglishvinegarA sour liquid formed by the fermentation of...
3Middle Englishvynegrevinegar, especially that made from wine
4Old Frenchvinaigrevinegar
5Old Frenchaigresour; acrid
6Vulgar Latinacrussour
7Latinācersharp, sour, bitter, pungent
8Latinsaccharumsugar
9Ancient Greekσάκχαρsugar; sugar cane
10Sanskritशर्कराgravel, grit, pebbles, shingle, gravelly mould or...
11Proto-Indo-AryanśárkaraH
12Proto-Indo-IranianćárkaraH
13Proto-Indo-Europeanḱorkeh₂gravel, boulder; boulder; gravel
Every word from Proto-Indo-European ḱorkeh₂