Where does “ruồi trâu” come from?

ruồi trâu (Vietnamese) comes from Vietnamese ruồi, from Proto-Vietic m-rɔːj, from Proto-Austroasiatic *roaj — fly (insect).

ruồi trâu (Vietnamese): horsefly; breeze

Definitions

  1. horsefly; breeze

Ancestry of “ruồi trâu”, step by step

ruồi trâu traces back through two separate lines of ancestry.

via Vietnamese ruồi

StepLanguageWordMeaning
1Vietnameseruồia fly
2Proto-Vieticm-rɔːj—
3Proto-Austroasiatic*roajfly (insect)

via Vietnamese trâu

StepLanguageWordMeaning
1Vietnamesetrâua water buffalo, as opposed to a bò; enduring,...
2Proto-Vieticb-luːbetel
3Proto-Mon-Khmerml(əw)betel
Every word from Proto-Austroasiatic *roaj →Every word from Proto-Vietic m-rɔːj →Every word from Vietnamese ruồi →
ruồi trâu — Etymology, Origin & Word History | Etymology Explorer