matting

A material consisting of thick, coarse fibers woven or pressed together, used as a floor covering or for protective purposes.

A layer of coarse material placed under a lawn or seedbed to prevent weeds and protect the soil.

The act or process of becoming tangled, knotted, or clumped together, typically referring to hair or fur.

A decorative border or a piece of cardboard placed around a picture or photograph to create a gap between the image and the frame.