demesneyoudaoicibaDictYouDict[demesne 词源字典]
demesne: [14] Ultimately, demesne is the same word as domain. It comes via Old French demeine from Latin dominicus, an adjective meaning ‘of a lord’ (see DOMINION), and hence etymologically means ‘land belonging to a lord’. Under the feudal system it denoted land retained by the lord for his own use, rather than let out to tenants. The -s- was inserted into the word in Anglo-Norman, partly as a graphic device to indicate a long vowel and partly through association with Old French mesnie ‘household’, which came ultimately from Latin mansio ‘place to stay’ (source of English mansion).
=> dame, danger, domain, dominion[demesne etymology, demesne origin, 英语词源]
demesne (n.)youdaoicibaDictYouDict
c. 1300, demeyne (modern spelling by late 15c.), from Anglo-French demesne, demeine, Old French demaine "land held for a lord's own use," from Latin dominicus "belonging to a master," from dominus "lord." Re-spelled by Anglo-French legal scribes under influence of Old French mesnie "household" (and the concept of a demesne as "land attached to a mansion") and their fondness for inserting -s- before -n-. Essentially the same word as domain.