Where does “ngón tay cái” come from?

ngón tay cái (Vietnamese) comes from Vietnamese ngón tay, from Vietnamese Tây, from Chinese 西, from English West, from Middle English west, from Old English west, from Proto-West Germanic *westr, from Proto-Germanic westrą.

ngón tay cái (Vietnamese): thumb

Definitions

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Ancestry of “ngón tay cái”, step by step

ngón tay cái traces back through two separate lines of ancestry.

via Vietnamese ngón tay

StepLanguageWordMeaning
1Vietnamesengón tayfinger
2VietnameseTâyAlternative letter-case form of tây
3Chinese西—
4EnglishWestAny of various particular regions named for the cardinal direction in which they lie
5Middle Englishwestwest; A location to the south; the south; The...
6Old Englishwestwest
7Proto-West Germanic*westrwestern, westernly
8Proto-Germanicwestrąwest; west, westward
9Proto-Germanicwestrazwest, western
10Proto-Indo-Europeanwek(ʷ)sperosevening
11Proto-Indo-Europeanwe-—

via Vietnamese cái

StepLanguageWordMeaning
1Vietnamesecáia thing; a whatsit; the solid bits of a broth;...
2Proto-Vietic-keːʔwoman, female
Every word from Proto-Indo-European we- →Every word from Proto-Indo-European wek(ʷ)speros →Every word from Proto-Germanic westraz →