tuft

A short cluster of elongated strands, as of yarn, hair, or grass, attached at the base or growing close together.

A dense clump, especially of trees or bushes.

To furnish or ornament with tufts or a tuft.

To pass threads through the layers of (a quilt, mattress, or upholstery), securing the thread ends with a knot or button.

To separate or form into tufts.