dog food noun6 •Food eaten by or appropriate for dogs in general, whether wild or domesticated. •Food for domesticated dogs. •Beta software that is tested on the developer’s own computer. •(slang) Synonym of dog meat (“dead person”).Did you just step on my blue suede shoes? You're dog food now! •(Internet, slang) public display of affection, especially from the perspective of a lonely, single person. •(slang) Heroin, typically the non-black tar type. formsdog foods · dog-foods