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ember [ember 词源字典]: ember: [OE] Ember goes back to a prehistoric Germanic *aimuzjōn, although it is possible that the modern English word represents a borrowing from the related Old Norse eimyrja rather than a direct line of descent from Old English ǣmyrge. The ember of Ember days [10], incidentally, ‘days following certain Christian festivals’, is a completely different word. It comes from Old English ymbryne ‘circuit’, literally ‘running round’, a compound formed from ymb ‘round’ and ryne ‘course, running’, a relative of modern English run. It was applied to these particular days of the Christian calendar because they ‘come round’ four times a year.
[ember etymology, ember origin, 英语词源]
ember-goose (n.): also embergoose, "loon," 1744, from Norwegian emmer-gaas, perhaps so called from its appearing on the coast in the ember days before Christmas.
Ember day: "Any of a number of days reserved for fasting and prayer in the Western Christian Church. Ember days traditionally comprise the Wednesday, Friday, and Saturday following St Lucy’s Day (13 December), the first Sunday in Lent, Pentecost (Whitsun), and Holy Cross Day (14 September), though other days are observed locally", Old English ymbren, perhaps an alteration of ymbryne 'period', from ymb 'about' + ryne 'course', perhaps influenced in part by ecclesiastical Latin quatuor tempora 'four periods' (on which the equivalent German Quatember is based).