1. a mixture or fusion of disparate elements: informal"the film becomes a weird mash-up of 1950s western and 1970s TV cop show"
▪ a musical track comprising the vocals of one recording placed over the instrumental backing of another: informal"a classic dancefloor mash-up"
▪ a web page or application created by combining data or functionality from different sources:informal"a mash-up which mixes BBC news with links to Wikipedia articles"