Where does “古柯” come from?

古柯 (Chinese) comes from English coca, from Catalan coca, from Spanish coz, from Old Spanish coçe, from Latin calcem — first-person singular present active subjunctive...

古柯 (Chinese): coca

Definitions

coca

Ancestry of “古柯”, step by step

Step	Language	Word	Meaning
1	English	coca	Any of the four cultivated plants which belong to...
2	Catalan	coca	coca pastry typically made and consumed in the Catalan-speaking areas
3	Spanish	coz	kick
4	Old Spanish	coçe	—
5	Latin	calcem	first-person singular present active subjunctive...

Every word from Latin calcem →Every word from Old Spanish coçe →Every word from Spanish coz →