Where does “ตาถั่ว” come from?

ตาถั่ว (Thai) comes from Thai ถั่ว, from Proto-Southwestern Tai *tʰuəᴮ¹, from Middle Chinese 豆 — bean.

ตาถั่ว (Thai): eye affected by cataract

Definitions

  1. eye affected by cataract

Ancestry of “ตาถั่ว”, step by step

ตาถั่ว traces back through two separate lines of ancestry.

via Thai ถั่ว

StepLanguageWordMeaning
1Thaiถั่วlegume; bean; pea; nut
2Proto-Southwestern Tai*tʰuəᴮ¹—
3Middle Chinese豆bean

via Thai ตา

StepLanguageWordMeaning
1Thaiตาmaternal grandfather; eye; time; turn; moment
2Proto-Taitaːᴬmaternal grandfather
Every word from Middle Chinese 豆 →Every word from Proto-Southwestern Tai *tʰuəᴮ¹ →Every word from Thai ถั่ว →