Where does “Coulm” come from?

Coulm (French) comes from Breton Koulm, from Latin columba, from Ancient Greek κόλυμβος, from Ancient Greek κολυμβάω — to dive, plunge; dive, plunge headlong, swim; I...

Ancestry of “Coulm”, step by step

Step	Language	Word	Meaning
1	Breton	Koulm	—
2	Latin	columba	dove, pigeon; a term of endearment
3	Ancient Greek	κόλυμβος	Alternative form of κολυμβῐ́ς; Alternative form...
4	Ancient Greek	κολυμβάω	to dive, plunge; dive, plunge headlong, swim; I...

Every word from Ancient Greek κολυμβάω →Every word from Ancient Greek κόλυμβος →Every word from Latin columba →