Where does “chastaigne” come from?

chastaigne (Middle French) comes from Old French chastaigne, from Old English ċisten, from Latin castanea, from Ancient Greek καστάνεια, from Ancient Greek κᾰ́στᾰνᾰ — sweet chestnuts; chestnut.

chastaigne (Middle French): chestnut

Definitions

chestnut

Ancestry of “chastaigne”, step by step

Step	Language	Word	Meaning
1	Old French	chastaigne	chestnut
2	Old English	ċisten	chestnut
3	Latin	castanea	a chestnut tree; a chestnut
4	Ancient Greek	καστάνεια	Alternative form of κᾰ́στᾰνᾰ; chestnut
5	Ancient Greek	κᾰ́στᾰνᾰ	sweet chestnuts; chestnut

Every word from Ancient Greek κᾰ́στᾰνᾰ →Every word from Ancient Greek καστάνεια →Every word from Latin castanea →