Where does “cối xay” come from?

cối xay (Vietnamese) comes from Vietnamese xáy, from Proto-Tai qraj — egg.

cối xay (Vietnamese): mill

Definitions

  1. mill

Ancestry of “cối xay”, step by step

cối xay traces back through two separate lines of ancestry.

via Vietnamese xáy

StepLanguageWordMeaning
1Vietnamesexáyto dig (with a pointed tool); to hollow; to excavate; to scoop out
2Proto-Taiqrajegg

via Vietnamese cối

StepLanguageWordMeaning
1Vietnamesecốia mortar; the container of a rice mill; a rice...
2Proto-Vietict-koːlʔrice mortar
Every word from Proto-Tai qrajEvery word from Vietnamese xáy