Main Entry:

sham·rock

Pronunciation:

\ˈsham-ˌräk\

Function:

noun

Etymology:

Irish seamróg, diminutive of seamar clover

Date:

1577

: 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