April Fools' day

noun

the first day of April which is celebrated by playing practical jokes

• Syn: ↑April Fools', ↑All Fools' day

• Hypernyms: ↑day

• Part Holonyms: ↑April, ↑Apr

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noun

Usage: usually capitalized A&F&D

: April 1st, when practical jokes are played on the unwary — called also All Fools' Day

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April 1, a day when practical jokes or tricks are played on unsuspecting people. Also called All Fools' Day.

[1825-35]

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April Fools' Day noun

1 April, the day on which tricks are traditionally played and fools made

• • •

Main Entry: ↑April

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April Fools’ Day UK US noun [countable/uncountable] [singular April Fools’ Day plural April Fools’ Days]

1st April, a day when people try to trick each other, especially by making other people believe something that is not true http://www.macmillandictionary.com/med2cd/weblinks/april-fools-day.htm

Thesaurus: miscellaneous special days_hyponym

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April Fools' Day or April Fool's Day,

April 1, a day observed by fooling people with tricks and jokes; All Fools' Day.

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(or April Fool's Day) noun [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.

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April Fool’s Day [April Fools Day] (also April Fools’ Day)

1 April, the day when people in many countries play tricks or jokes on each other. The victim of the joke is called the April Fool. A typical trick is to make somebody believe something that is not true, e.g. that the clocks have changed and everything is an hour later, or that the government has announced an election. Newspapers, television and radio stations often join in with imaginary news stories.