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four-leaf clover

American  
[fawr-leef, fohr-] / ˈfɔrˌlif, ˈfoʊr- /

noun

  1. a clover leaf having four leaflets instead of the usual three, purported to bring good luck.

four-leaf clover British  

noun

  1. a clover with four leaves rather than three, supposed to bring good luck

  2. another name for cloverleaf

"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

Etymology

Origin of four-leaf clover

First recorded in 1840–50

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.