sidebar

1. A short news story printed alongside a larger one.
2. A block of information placed at the side of a printed page.
3. A block of information placed at the side of a webpage.
4. A short conference, between a judge and the attorneys of a case, held outside the jury's hearing; the place where this happens.
5. An accessory side note or aside made during a conversation, without changing the scope of the audience.
6. A short conversation between a smaller portion of a group held outside the hearing of the rest of the group.

verb

To place information into a sidebar