Lint is the common name for visible accumulations of textile fibers and other materials, usually found on and around clothing). Certain materials used in the manufacture of clothing, such as cotton, linen, and wool, contain numerous, very short fibers that can come off during normal wear and tear). Lint is composed of threads of all colors, which blend hues and may appear to be a uniform grey).

Dryer lint, in particular, is the lint generated by the drying of clothes in a clothes dryer, and it typically accumulates on a dryer screen. Dryer lint is one of the most reusable substances in the home, and it can be used for various purposes such as making fire starters, stuffing pillows and stuffed animals, and making papier-mâché projects.

It is important to note that lint can be a fire hazard, and failure to clean the lint filter after every cycle is the leading cause of home clothes dryer fires. Lint is also bad for the environment, as it can contain microplastics that are small enough to get into the water system and can be ingested by marine life, putting a major strain on the ecosystem in general.