say it: BROW-nee
brownie is a noun meaning "a junior Girl Scout". It carries 3 recorded senses.
folklore
square or bar of very rich chocolate cake usually with nuts
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 brownie 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.