An Insert

1. An image inserted into text.
2. A promotional or instructive leaflet inserted into a magazine, newspaper, tape or disk package, etc.
3. A mechanical component inserted into another.
4. (linguistics) An expression, such as "please" or an interjection, that may occur at various points in an utterance.
5. (genetics) A sequence of DNA inserted into another DNA molecule.
6. (television) A pre-recorded segment included as part of a live broadcast.
7. (film, television) A close-up shot used to draw attention to a particular element of a larger scene