Where does “cochddu” come from?

cochddu (Welsh) comes from Welsh coch, from Middle Welsh coch, from Proto-Brythonic kox, from Latin coccum, from Ancient Greek κόκκος — grain, seed, kernel; The kermes oak; insects of...

cochddu (Welsh): brown, russet

Definitions

brown, russet

Ancestry of “cochddu”, step by step

cochddu traces back through two separate lines of ancestry.

via Welsh coch

Step	Language	Word	Meaning
1	Welsh	coch	red
2	Middle Welsh	coch	red
3	Proto-Brythonic	kox	—
4	Latin	coccum	a scarlet berry of various plants; a gall of...
5	Ancient Greek	κόκκος	grain, seed, kernel; The kermes oak; insects of...

via Welsh du

Step	Language	Word	Meaning
1	Welsh	du	black
2	Proto-Brythonic	duβ	black
3	Proto-Celtic	dubus	black
4	Proto-Indo-European	dʰewbʰ-	deep
5	Proto-Indo-European	dʰewh₂-	smoke; mist, haze

Every word from Ancient Greek κόκκος →Every word from Latin coccum →Every word from Proto-Brythonic kox →