Where does “code” come from?

code (French) comes from Old French code, from Latin cōdex, from Latin caudex — A tree trunk, stump; A bollard; post; A book,...

code (French): code

Definitions

Step	Language	Word	Meaning
1	Old French	code	Alternative form of coute; elbow; system of law
2	Latin	cōdex	—
3	Latin	caudex	A tree trunk, stump; A bollard; post; A book,...

code — Etymology, Origin & Word History | Etymology Explorer