Definitions
1.NounThe descriptive heading or title, of a document or part thereof.
2.NounA title or brief explanation attached to an illustration, cartoon, user interface element, etc.
3.NounA 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.
4.NounThe 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.
5.NounA seizure or capture, especially of tangible property (chattel).
6.NounA story that is embedded in a pre-existing image (sometimes with image manipulation)
7.VerbTo add captions to a text or illustration."Only once the drawing is done will the letterer caption it."
8.VerbTo add captions to a film or broadcast.