Definition of ember day
: a Wednesday, Friday, or Saturday following the first Sunday in Lent, Whitsunday, September 14, or December 13 set apart for fasting and prayer in Western churches
Origin and Etymology of ember day
Middle English, from Old English ymbrendæg, from ymbrene circuit, anniversary + dæg day
First Known Use: before 12th centurySee Words from the same year
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