noun sham·rock \ˈsham-ˌräk\

: a small plant with three leaves on each stem that is the national symbol of Ireland

Full Definition of SHAMROCK

:  a trifoliolate plant used as a floral emblem by the Irish: as
a :  a yellow-flowered Old World clover (Trifolium dubium) often regarded as the true shamrock
b :  wood sorrel
c :  white clover

Origin of SHAMROCK

Irish seamróg, diminutive of seamar clover
First Known Use: 1577


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