noun The descriptive heading or title, of a document or part thereof.
noun A title or brief explanation attached to an illustration, cartoon, user interface element, etc.
noun A piece of text appearing on screen as a subtitle or other part of a film or broadcast, describing dialogue (and sometimes other sound) for viewers who cannot hear.
noun The section on an official paper (for example, as part of a seizure or capture) that describes when, where, and what was taken, found or executed, and who authorized the act.
noun A seizure or capture, especially of tangible property (chattel).
noun A story that is embedded in a pre-existing image (sometimes with image manipulation)
verb To add captions to a text or illustration.
Only once the drawing is done will the letterer caption it.