bracer (n.)youdaoicibaDictYouDict[bracer 词源字典]
early 14c., "piece of armor protecting the arm;" 1580s, "a clamp, bind, brace," from brace (n.). Figurative sense of "that which braces the nerves" is 1740; especially of alcoholic drinks from c. 1850. Related: Bracers.[bracer etymology, bracer origin, 英语词源]