accoladeyoudaoicibaDictYouDict[accolade 词源字典]
accolade: [17] Accolade goes back to an assumed Vulgar Latin verb *accollāre, meaning ‘put one’s arms round someone’s neck’ (collum is Latin for ‘neck’, and is the source of English collar). It put in its first recorded appearance in the Provençal noun acolada, which was borrowed into French as accolade and thence made its way into English. A memory of the original literal meaning is preserved in the use of accolade to refer to the ceremonial striking of a sword on a new knight’s shoulders; the main current sense ‘congratulatory expression of approval’ is a later development.
=> collar[accolade etymology, accolade origin, 英语词源]
accolade (n.)youdaoicibaDictYouDict
1620s, from French accolade (16c.), from Provençal acolada or Italian accollata, ultimately from noun use of a fem. past participle from Vulgar Latin *accollare "to embrace around the neck," from Latin ad- "to" (see ad-) + collum "neck" (see collar (n.)).

The original sense is of an embrace about the neck or the tapping of a sword on the shoulders to confer knighthood. Extended meaning "praise, award" is from 1852. Also see -ade. Earlier was accoll (mid-14c.), from Old French acolee "an embrace, kiss, especially that given to a new-made knight," from verb acoler. The French noun in the 16c. was transformed to accolade, with the foreign suffix.