say it: LOO-ow
luau is a noun meaning "an elaborate Hawaiian feast or party (especially one accompanied by traditional foods and entertainment)". It carries one recorded sense.
an elaborate Hawaiian feast or party (especially one accompanied by traditional foods and entertainment)
Hawaii
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 luau 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.