say it: GIN-uhs
guinness is a noun meaning "English stage and screen actor noted for versatility (1914-2000)". It carries 2 recorded senses.
English stage and screen actor noted for versatility (1914-2000)
a kind of bitter stout
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 guinness 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.