GIF

Noun

• A bitmap image format for pictures with support for multiple images per file or animations, and up to 256 distinct colors per frame, including a fully transparent color.
• An image encoded in GIF file format; the resulting file.
• Any short video without audio, usually one which loops.
• Any short video, in a format directly supported by HTML5 (ie. GIF, MP4, WebM)

Verb

• To create a GIF file of (an image or video sequence, especially relating to an event).