Where does “dầu giun” come from?

dầu giun (Vietnamese) comes from Vietnamese giun, from Proto-Vietic p-luːn, from Proto-Mon-Khmer (b)ruun.

dầu giun (Vietnamese): Jesuit's tea; Mexican-tea (Dysphania ambrosioides)

Definitions

  1. Jesuit's tea; Mexican-tea (Dysphania ambrosioides)

Ancestry of “dầu giun”, step by step

dầu giun traces back through two separate lines of ancestry.

via Vietnamese giun

StepLanguageWordMeaning
1Vietnamesegiuna worm
2Proto-Vieticp-luːnearthworm
3Proto-Mon-Khmer(b)ruun—

via Vietnamese dầu

StepLanguageWordMeaning
1Vietnamesedầuoil; "Dipterocarpus"
2Middle Chinese油—
Every word from Proto-Mon-Khmer (b)ruun →Every word from Proto-Vietic p-luːn →Every word from Vietnamese giun →