1. An audio recording that is a composite of samples from other recordings, usually from different musical styles.
2. Point being, The Smurfs can take solace that it somewhat over-performed this weekend, while the Jon Favreau genre mash-up may go down as one of the bigger whiffs of the summer season.
3. Powerful, world-changing ideas were exchanged during the 2011 Nexus Global Youth Summit, simply from the "mash-up" of young and eager philanthropists and social entrepreneurs who want to change the world.
4. The ambitious network correspondent sleeping with the president's husband is a mash-up of all those hot White House newsbabes.