grommet (n.)youdaoicibaDictYouDict[grommet 词源字典]
also gromet, grummet, 1620s, "ring or wreath of rope," from obsolete French gromette "curb of a bridle" (Modern French gourmette), from gourmer "to curb," of uncertain origin. Extended sense of "metal eyelet" first recorded 1769.[grommet etymology, grommet origin, 英语词源]