Callout Definition

(slang) An invitation to fight; the act of one child calling out another.

(typography, graphic layout) A pull quote: an excerpt from an article (such as in a news magazine) that is duplicated in a large font alongside the article so as to grab a reader's attention and indicate the article's topic.

A summons to someone designated as being on call.

An annotation that pertains to a specific location in a body of text or a graphic, and that is visually linked to that location by a mark or a matching pair of marks.