Define perv: pervert — perv in a sentence. Definition of perv.: pervert. See perv defined for English-language learners Scientists who dream of transplanting organs from pigs into people have long faced a nagging question: What about PERVs? — kelly servick, Science | AAAS, "CRISPR slices virus genes out of pigs, . pervs definition, meaning, English dictionary, synonym, see also 'perverse',perve' ,pervasion',pervasive', Reverso dictionary, English definition, English vocabulary. Perv definition: a pervert | Meaning, pronunciation, translations and examples.