English Etymology From foam + -er. Pronunciation Audio (General Australian):(file) Noun foamer (plural foamers) (US, slang) An obsessive railfan A device that foams or froths liquid. (cooking) A screw-top culinary device that comprises a pressure vessel used to hold a liquid and is charged with a compressed gas, to force the contents out of the nozzle, to create a foam. Derived terms antifoamer References Anagrams femora, morafe Wikiwand - on Seamless Wikipedia browsing. On steroids.