merlon (n.)youdaoicibaDictYouDict[merlon 词源字典]
"solid part of a battlement," 1704, from French merlon (17c.), from Italian merlone, augmentative of merlo "battlement," perhaps a contraction of mergola, diminutive of Latin mergae "two-pronged pitchfork."[merlon etymology, merlon origin, 英语词源]