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

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

This sequence is often used for creating buttonholes or adding a border to a garment. Based on the search results, "bo st up"