Definitions from Wiktionary (callout)

▸ noun:  (communication) An outgoing telephone call.
▸ noun:  An instance of being summoned to visit a certain place in order to provide assistance; an instance of summoning someone who is on call.
▸ noun:  (US) A meeting or rally held in order to find interested participants, e.g. for an activity or sports team.
▸ noun:  (slang) An invitation to fight.
▸ noun:  A request for people to join or take part.
▸ noun:  (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.
▸ noun:  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.
▸ noun:  The act of calling out from work, i.e. announcing that one cannot attend; the act of calling in sick.
▸ noun:  (idiomatic) A form of verbal abuse with the intention of making the victim feel guilty.
▸ noun:  (programming) The invocation of an external third-party component.

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