say it: BUHT-ur-milk
buttermilk is a noun meaning "residue from making butter from sour raw milk; or pasteurized milk curdled by adding a culture". It carries one recorded sense.
residue from making butter from sour raw milk; or pasteurized milk curdled by adding a culture
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 buttermilk 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.