Definition of swatch
noun
a small sample of fabric intended to demonstrate the look of a larger piece. a collection of fabric samples, especially in the form of a book. a sample of paint, makeup, etc. applied to a surface or one’s skin to test or demonstrate the color:red lipstick swatches the walls were covered with multicoloured paint swatches a patch or area of a material or surface:the sunset had filled the sky with swatches of deep orange
verb
[with object] apply a sample of (paint, makeup, etc.) to a surface or one’s skin to test or demonstrate the color:I got the polishes yesterday, and I’ve swatched them all