Wednes·day n. The fourth day of the week; the next day after Tuesday.
Ash Wednesday. See in the Vocabulary.
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Ash Wednes·day The first day of Lent; -- so called from a custom in the Roman Catholic church of putting ashes, on that day, upon the foreheads of penitents.
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Ash Wednesday
n : the 7th Wednesday before Easter; the first day of Lent; the
day following Mardi Gras (`fat Tuesday'); a day of
fasting and repentance