The With Yarn in Back instruction (abbreviated as wyib) is found generally in pattern where you slip a stitch. The abbreviation is really quite straightforward: it literally means that you bring your yarn to the back of the work. This instruction is used to distinguish points in your pattern where the yarn would normally be held in the front of the work, to alert you that these stitches will be different.
Our mission is to empower knitters to be fearless with their knitting through great education, simple projects, and an amazing community.
Help spread the word. You're awesome for doing it!