The phrase "hat pattern" refers to instructions or a design that tells you how to make a hat. It explains the steps and measurements needed to sew or knit a hat in a specific style or shape. Full definition
This is a cute crochet sweater that you can do in a solid color or with two - tone sleeves and it has a matching free crochet hat pattern. (thespruce.com)
This crochet baby hat pattern makes for a wonderful handmade baby shower gift that a new mom will surely appreciate receiving. (allfreeholidaycrafts.com)