Ember Days, four annually recurring periods of three days each, appointed by the Romish and English Churches to be devoted to fasting and praying; they are the Wednesday, Friday, and Saturday after the first Sunday in Lent, after Pentecost, after the 14th September, and after the 13th December.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Embalming * Embryo