(Northern England, obsolete) 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.
(UK) A channel or passage of water between sandbanks, or between a sandbank and a seashore.
(figuratively) A clump or portion of something.
(figuratively) A demonstration, an example, a proof.
A piece, pattern, or sample, generally of cloth or a similar material.
A selection of such samples bound together.
verb
To create a swatch, especially a sample of knitted fabric.