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[sham-rok] /ˈʃæm rɒk/
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: the national emblem of Ireland.
Origin of shamrock
1565-75; < Irish seamróg, equivalent to seamair clover + -óg diminutive suffix Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for shamrock
Contemporary Examples
Historical Examples
  • A fellow-countryman of mine designed a shamrock in blue lobelia.

    A Padre in France George A. Birmingham
  • I am sorry to say that Shakespeare does not mention the shamrock at all.

    More Science From an Easy Chair Sir E. Ray (Edwin Ray) Lankester
  • I got a post as typist in a city office and I drifted to shamrock House.

    To Love Margaret Peterson
  • As it was she went back to shamrock House with a lightened heart.

    To Love Margaret Peterson
  • The name "shamrock" is an old Irish word, written "seamragg," and means a little "trefoil."

    More Science From an Easy Chair Sir E. Ray (Edwin Ray) Lankester
  • She turned at the bottom of shamrock House steps and held out her hand to him.

    To Love Margaret Peterson
  • Then he said nothing—but just put the rose and shamrock into my hand.

  • "Pets are strictly against the rules in shamrock House," she reminded her.

    To Love Margaret Peterson
  • The shamrock's Erin's badge by law,Where'er her sons be found.

    War's Brighter Side Julian Ralph.
British Dictionary definitions for shamrock


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
Word Origin
C16: from Irish Gaelic seamrōg, diminutive of seamar clover
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
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Word Origin and History for shamrock

1570s, from Irish seamrog, diminutive of seamar "clover." Cf. Gaelic seamrag "trefoil."

Online Etymology Dictionary, © 2010 Douglas Harper
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