1. (图片、漫画的)说明文字
A caption is the words printed underneath a picture or cartoon which explain what it is about.

2. 为(照片或漫画)添加说明文字
When someone captions a picture or cartoon, they put a caption under it.

1. brief description accompanying an illustration

Synonym: legend

2. translation of foreign dialogue of a movie or TV program
usually displayed at the bottom of the screen

Synonym: subtitle

3. taking exception
especially a quibble based on a captious argument

e.g. a mere caption unworthy of a reply