Where does “crête” come from?

crête (French) comes from Old French creste, from Vulgar Latin *cresta, from Latin crista, from Proto-Indo-European (s)ḱer- — dung, manure, filth; manure, dung, filth.

crête (French): crest (on a bird); comb (on a cock)

Definitions

crest (on a bird); comb (on a cock)

Ancestry of “crête”, step by step

Step	Language	Word	Meaning
1	Old French	creste	—
2	Vulgar Latin	*cresta	—
3	Latin	crista	the crest, the plume; the comb or tuft on the...
4	Proto-Indo-European	(s)ḱer-	dung, manure, filth; manure, dung, filth

Every word from Proto-Indo-European (s)ḱer- →Every word from Latin crista →Every word from Vulgar Latin *cresta →