bonfireyoudaoicibaDictYouDict[bonfire 词源字典]
bonfire: [14] A bonfire was originally a fire in which bones were burned. References to such (presumably rather evil-smelling) fires, which were large open air affairs, continue down to the 18th century, but latterly they have a distinctly antiquarian air, as if such things were a thing of the past. By the later 15th century the word was already passing to the more general modern meaning ‘large outdoor fire’, either celebratory (as in Bonfire Night, 5 November) or for destroying refuse.
=> bone[bonfire etymology, bonfire origin, 英语词源]
bonfire (n.)youdaoicibaDictYouDict
1550s, from Middle English banefire (late 15c.), originally a fire in which bones were burned. See bone (n.) + fire (n.).