say it: SHAM-rahk
shamrock is a noun meaning "creeping European clover having white to pink flowers and bright green leaves; naturalized in United States; widely grown for forage". It carries 3 recorded senses.
creeping European clover having white to pink flowers and bright green leaves; naturalized in United States; widely grown for forage
Eurasian plant with heart-shaped trifoliate leaves and white purple-veined flowers
clover native to Ireland with yellowish flowers; often considered the true or original shamrock
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for shamrock come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.