lunette (n.)youdaoicibaDictYouDict[lunette 词源字典]
1570s, "semi-circular horseshoe," from Middle French lunette (13c.), literally "little moon," diminutive of lune "moon," from Latin luna (see luna). Later applied to a wide range of objects and ornamentations resembling a crescent moon.[lunette etymology, lunette origin, 英语词源]