the victim of a practical joke or trick on April Fools' Day.
a practical joke or trick played on that day.
How Did April 1 Become “April Fools’ Day”?How did this odd, prank-centric holiday come to be celebrated in the first place, and why is it called April Fools' Day?
Origin of April fool
First recorded in 1680–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for april fool
You know, Mrs. Vanderhook expects me to look after the decorations of her April-Fool tea party.The Gay Gnani of Gingalee|Florence Huntley
Bertie walks slowly toward the door, but stops halfway there, and asks, "Is it April-fool's Day?"
British Dictionary definitions for april fool
an unsuspecting victim of a practical joke or trick traditionally performed on the first of April (April Fools' Day or All Fools' Day)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012