a short piece of text under a picture in a book or article that describes the picture or explains what the people in it are doing or saying

He drew cartoons with captions.

Jo tweeted the picture of herself with the cake with the caption “Cake from my favourite bakery!"

to provide a short piece of text under a picture in a book or article that describes the picture or explains what the people in it are doing or saying

The picture was captioned "Catherine Deneuve in Belle du Jour". 照片说明写道“凯瑟琳·德纳芙在《白日美人》中”。

a captioned photograph 一幅带有文字说明的照片