[ 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.

Nearby words

  1. shammy,
  2. shamo,
  3. shamokin,
  4. shamoy,
  5. shampoo,
  6. shamrock-pea,
  7. shamshir,
  8. shamus,
  9. shan,
  10. shan state

Origin of shamrock

1565–75; < Irish seamróg, equivalent to seamair clover + -óg diminutive suffix Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for shamrock

British Dictionary definitions for shamrock


/ (ˈʃæmˌrɒk) /


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 for shamrock

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

Word Origin and History for shamrock



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

Online Etymology Dictionary, © 2010 Douglas Harper