1. a mixture or fusion of disparate elements: informal"the movie becomes a weird mash-up of 1950s western and 1970s TV cop show"
▪ a recording created by digitally combining and synchronizing instrumental tracks with vocal tracks from two or more different songs: informal"a classic dancefloor mash-up"
▪ a web page or application created by combining data or functionality from different sources:informal"a mash-up that mixes CNN news with links to Wikipedia articles"