hickory (n.)youdaoicibaDictYouDict[hickory 词源字典]
1670s, American English, from Algonquian (perhaps Powhatan), shortening of pockerchicory or a similar name for this species of walnut. Old Hickory as the nickname of U.S. politician Andrew Jackson is first recorded 1827.[hickory etymology, hickory origin, 英语词源]