Where does “hầm ngầm” come from?

hầm ngầm (Vietnamese) comes from Vietnamese hàm, from Middle Chinese 銜.

hầm ngầm (Vietnamese): an underground tunnel

Definitions

  1. an underground tunnel

Ancestry of “hầm ngầm”, step by step

hầm ngầm traces back through two separate lines of ancestry.

via Vietnamese hàm

StepLanguageWordMeaning
1Vietnamesehàmjaw; Clipping of hàm số
2Middle Chinese銜—

via Vietnamese ngầm

StepLanguageWordMeaning
1Vietnamesengầmunderground; subterranean; secret; covert;...
Every word from Middle Chinese 銜 →Every word from Vietnamese hàm →