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April Fools' Day

1 ENTRIES FOUND:
April Fools' Day noun
or April Fool's Day
April Fools' Day
noun
or April Fool's Day
Britannica Dictionary definition of APRIL FOOLS' DAY
[singular]
: April 1 celebrated as a day on which people play tricks on each other
called also All Fools' Day
◊ A trick that is played on April Fools' Day is often called an April Fools' trick or April Fools' joke. A person who is tricked on April Fools' Day is sometimes called an April fool.