fescue (n.)youdaoicibaDictYouDict[fescue 词源字典]
1510s, "teacher's pointer," alteration of festu "piece of straw, twig" (late 14c.), from Old French festu "straw; object of little value" (12c., Modern French fétu), from Vulgar Latin festucum, from Latin festuca "straw, stalk, rod," probably related to ferula "reed, whip, rod" (see ferule). Sense of "pasture, lawn grass" is first recorded 1762. Wyclif (1382) has festu in Matt. vii:3 for the "mote" in the eye. In Old French rompre le festu was to symbolically break a straw to signify the breaking of a bond.[fescue etymology, fescue origin, 英语词源]