A lump or thick spot in a yarn, or the irregular appearance of a fabric caused by such. May be a defect or a design feature.
(Knit fabric) - Usually caused by a thick or heavy place in yarn, or by ling getting onto yarn feeds.
(woven fabric) - usually caused by an extra piece of yarn that is woven into fabric. It can also be caused by thick places in the yarn. Often is caused by fly waste being spun in yarn in the spinning process.
A lump or thick place on yarn caused by small lengths of yarn adhering to it during the spinning process. This adds a random texture to the fabric when the yarn is woven or knit into a garment.
A thickened place (in a spun yarn) that has tapering ends and a diameter several times that of the adjacent normal yarn.
A thick place in a strand of YARN caused by improper SPINNING.