swatch

A piece, pattern, or sample, generally of cloth or a similar material.

“He held a swatch of the wallpaper up to see if the colors would match the room.”

A selection of such samples bound together.

A clump or portion of something.

A demonstration, an example, a proof.

A tag or other small object attached to another item as a means of identifying its owner; a tally; specifically the counterfoil of a tally.

To create a swatch, especially a sample of knitted fabric.

“Swatching is important in knitting to obtain the correct gauge.”

A channel or passage of water between sandbanks, or between a sandbank and a seashore.