a mixture or fusion of disparate elements: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:a classic dancefloor mash-up
Computing a web page or application created by combining data or functionality from different sources:a mash-up which mixes BBC news with links to Wikipedia articles
mash-up in other Oxford dictionaries
Definition of mash-up in the US English dictionary