Etymology of the Polish word kasztan

Cognates

Catalan castanya, Dutch kastanje, English chestnut, French châtaigne, German Kastanie, Icelandic kastanía, Italian castagna, Latin castanea, Lithuanian kaštonas, Norwegian kastanje, Portuguese castanha, Provençal castanha, Russian кaштaн, Spanish castaña, Swedish kastanj, Yiddish kest