sidebar

Short definition from Wiktionary

Noun

1. 1
   A short news story printed alongside a larger one.
2. 2
   A block of information placed at the side of a printed page.
3. 3
   A block of information placed at the side of a webpage.
4. 4
   A short conference, between a judge and the attorneys of a case, held outside the hearing of the jury and the spectators at the court.
5. 5
   The place in the courtroom where such a conference happens.
6. 6
   An accessory side note or aside made during a conversation, without changing the scope of the audience.
7. 7
   A short conversation between a smaller portion of a group held outside the hearing of the rest of the group.

Verb

1. 1
   To place (information) into a sidebar, or as if into a sidebar.