Bost - Up

Based on the search results, "bo st up" appears to be a knit stitch abbreviation or a fragment of a knitting pattern, specifically a "Baby Knits from Around the World" pattern involving "BO" (Bind Off) and "st" (stitch) or "pick up" a stitch. "BO" (Bind Off) and "Pick Up" Guide

Insert your needle into the edge of the sweater (often in the gap between stitches), wrap the yarn, and pull it through to create a new stitch. bost up

To join, take the last stitch you worked (the edging stitch) and pass it over the newly picked-up stitch to securely connect a new section (like a border or sleeve) to the main piece. Based on the search results, "bo st up"

This sequence is often used for creating buttonholes or adding a border to a garment. This sequence is often used for creating buttonholes

Usually, this means knitting two stitches, then passing the first stitch over the second, repeating for the number of stitches required.