[sham.rock] n [Ir seamrog, dim. of seamar clover] (1577): a trifoliolate plant used as a floral emblem by the Irish: as a: a yellow-flowered clover (Trifolium dubium) often regarded as the true shamrock b: wood sorrel c: white clover
SHAMROCK
Meaning of SHAMROCK in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012