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shamrock

American  
[sham-rok] / ˈʃæm rɒk /

noun

  • shamrocks
    plural
  1. any of several trifoliate plants, as the wood sorrel, Oxalis acetosella, or a small, pink-flowered clover, Trifolium repens minus, but especially Trifolium procumbens, a small, yellow-flowered clover: a symbol of Ireland.


shamrock British  
/ ˈʃæmˌrɒk /

noun

  1. a plant having leaves divided into three leaflets, variously identified as the wood sorrel, red clover, white clover, and black medick: the national emblem of Ireland

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of shamrock

1565–75; < Irish seamróg, equivalent to seamair clover + -óg diminutive suffix

Compare meaning

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Explanation

A shamrock is a three-leafed green clover that's used to symbolize Ireland. Go all out for St. Patrick's Day this year — decorate your whole house with shamrocks! A clover must have exactly three leaves to be a shamrock, and some people believe only certain clover varieties qualify. Since at least 1675, Catholics have associated the shamrock with Saint Patrick, who famously used it to represent the Holy Trinity. It wasn't until the 18th century that it shifted from representing Ireland's patron saint to Ireland itself. The shamrock even shows up on some British coins, alongside the English rose and Scottish thistle.

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Vocabulary lists containing shamrock

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“My first tattoo,” she wrote, “might just be a huge shamrock in the middle of my forehead.”

From Los Angeles Times ● May 30, 2025

But such information would only have puzzled Trump and complicated the shamrock bonhomie, and Vance — a Roman Catholic convert, after all — beamed in silence from the sofa.

From Salon ● Mar. 16, 2025

He announced his intention to play for Notre Dame on social media, writing “A dream come true. Go Irish,” with a shamrock image at the end.

From Seattle Times ● Dec. 12, 2023

It features a rose, a thistle, a daffodil and a shamrock - emblems from nations across the United Kingdom.

From BBC ● Mar. 7, 2023

“Wish I hadn’t bought this now,” said Ron, gesturing at his dancing shamrock hat and gazing longingly at the Omnioculars.

From "Harry Potter And The Goblet Of Fire" by J. K. Rowling

When the Irish visit the White House each year, they traditionally bring a bowl of shamrocks.

From The Wall Street Journal ● Mar. 11, 2026

Made of cloth of gold, it is embellished with motifs including fleur-de-lis, as well as imperial eagles, and national floral emblems of red-pink roses, blue thistles and green shamrocks.

From BBC ● May 1, 2023

On the menu will be corned beef and cabbage and green cookies shaped like shamrocks.

From Seattle Times ● Mar. 15, 2023

For her historic 2011 visit to Ireland, Elizabeth wore a green outfit to meet then President Mary McAleese, while her evening gown for a state banquet featured silk shamrocks.

From Reuters ● May 18, 2022

Ron, meanwhile, was absent- mindedly shredding the shamrocks on his hat.

From "Harry Potter And The Goblet Of Fire" by J. K. Rowling

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