Where does “ổ khoá” come from?

ổ khoá (Vietnamese) comes from Vietnamese khoá, from Chinese 課.

ổ khoá (Vietnamese): lock device

Definitions

  1. lock device

Ancestry of “ổ khoá”, step by step

ổ khoá traces back through two separate lines of ancestry.

via Vietnamese khoá

StepLanguageWordMeaning
1Vietnamesekhoáto lock
2Chinese課—

via Vietnamese ổ

StepLanguageWordMeaning
1Vietnameseổa nest; a space where a lot of beings of the same...
2Proto-Vieticʔuh—
Every word from Chinese 課 →Every word from Vietnamese khoá →