stubble (n.)youdaoicibaDictYouDict[stubble 词源字典]
c. 1300, "stumps of grain stalks left in the ground after reaping," from Old French estuble "stubble" (Modern French éteule), from Vulgar Latin stupla, reduced form of Latin stipula "stalk, straw" (see stipule). Applied from 1590s to bristles on a man's unshaven face.[stubble etymology, stubble origin, 英语词源]