Where does “castor” come from?

castor (Galician) comes from Latin Castor, from Ancient Greek Κάστωρ, from Doric Greek κάστον.

castor (Galician): beaver

Definitions

beaver

Ancestry of “castor”, step by step

Step	Language	Word	Meaning
1	Latin	Castor	Castor
2	Ancient Greek	Κάστωρ	Castor
3	Doric Greek	κάστον	—

Every word from Doric Greek κάστον →Every word from Ancient Greek Κάστωρ →Every word from Latin Castor →