caption

1 an explanation or description accompanying a pictorial illustration for the school yearbook, funny captions were written for snapshots showing a typical day at school Synonyms cutline, legend Related Words key; closed-captioning, subtitle, translation; motto, posy, slogan, tagline

2 a word or series of words often in larger letters placed at the beginning of a passage or at the top of a page in order to introduce or categorize the textbook features cleverly worded captions to capture the reader's attention Synonyms heading, head, header, headline, rubric, titleRelated Words banner, streamer; catch word, guide word, running head; greeting, salutation; superscript, superscription; subhead, subheading, subtitle