3meanings: 1. the use of words or phrases to exploit ambiguities and innuendoes in theirmeaning, usually for humorous effect;.... Click for more definitions. Definitionand a list of examples ofpun. Apunis a play on similar sounding words for humorous or rhetorical effect. Apunis a play on words. If a bird flying overhead takes a poop on the cake you’re carrying, you could say “Isn’t that just the icing on the cake!” But only if you want to be punny. PunDefinitionofPunApunis a literary device that is also known as a “ play on words.”Punsinvolve words with similar or identical sounds but with differentmeanings. Their play on words also relies on a word or phrase having more than onemeaning.