Where does “sangle” come from?

sangle (Old French) comes from Latin singulus, from Proto-Italic sem-g-lo-, from Proto-Indo-European sem- — together, one.

Ancestry of “sangle”, step by step

StepLanguageWordMeaning
1Latinsingulussingle; apiece; every
2Proto-Italicsem-g-lo-—
3Proto-Indo-Europeansem-together, one
Every word from Proto-Indo-European sem- →Every word from Proto-Italic sem-g-lo- →Every word from Latin singulus →