Leyden jar (n.)youdaoicibaDictYouDict[Leyden jar 词源字典]
1755, phial used for accumulating and storing static electricity, from Leyden (modern Leiden), city in Holland; so called because it was first described (in 1746) by physicist Pieter van Musschenbroek of Leyden (1692-1761). The place name is said to be from Germanic *leitha- "canal."[Leyden jar etymology, Leyden jar origin, 英语词源]