Where does “castor” come from?

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

castor (Spanish): beaver

Definitions

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

castor — Etymology, Origin & Word History | Etymology Explorer