BetsyyoudaoicibaDictYouDict[Betsy 词源字典]
fem. pet name, a diminutive of Bet, itself short for Elizabet or Elizabeth. Betsy as the typical a pet name for a favorite firearm is attested in American English by 1856 (compare Brown Bess, by 1785, British army slang for the old flintlock musket).[Betsy etymology, Betsy origin, 英语词源]