Where does “cầu thang” come from?

cầu thang (Vietnamese) comes from Vietnamese cầu, from Proto-Vietic kaw, from Dutch kauwen, from Middle Dutch couwen, from Old Dutch kiuwan, from Proto-West Germanic keuwan, from Proto-Germanic kewwaną, from Proto-Indo-European ǵyewh₁- — to chew.

cầu thang (Vietnamese): a staircase; flight of stairs

Definitions

  1. a staircase; flight of stairs

Ancestry of “cầu thang”, step by step

cầu thang traces back through two separate lines of ancestry.

via Vietnamese cầu

StepLanguageWordMeaning
1Vietnamesecầua jianzi shuttlecock; a badminton shuttlecock;...
2Proto-Vietickaw—
3Dutchkauwento chew
4Middle Dutchcouwento chew
5Old Dutchkiuwanto chew
6Proto-West Germanickeuwanto chew
7Proto-Germanickewwanąto chew
8Proto-Indo-Europeanǵyewh₁-to chew

via Vietnamese thẳng

StepLanguageWordMeaning
1Vietnamesethẳngstraight
2Chinese湯—
3Proto-Sino-Tibetanr-la(w)ŋsteam; hot
Every word from Proto-Indo-European ǵyewh₁- →Every word from Proto-Germanic kewwaną →Every word from Proto-West Germanic keuwan →