noun / verb
purl
PURL/pɜːrl/
A knitting stitch that forms a raised bump, or making this stitch.
He purls with the working yarn held in front of the needles.

Etymology
The knitting term is usually linked to an older embroidery verb, probably from Middle English pirlyng, “revolving, twisting.” Both that ancestry and the identification of the knitting and embroidery uses as one word remain uncertain.
In context
A lot of people are intimidated by the purl stitch, but really it's just the mirror image of a knit stitch. So, if you can knit, you can definitely purl.
More examples
- Alternate one knit and one purl to make ribbing.
- She purled the entire row before turning her work.
- Purling creates bumps on the side facing you.
Forms
purl · purls · purled · purling