What Does BO Mean in Crochet? (Bind Off and Bobble)
If you have seen the abbreviation BO in a crochet pattern and felt unsure what it means, you are not alone. BO can be a little confusing because it has more than one possible meaning in crochet, though one is far more common than the other. This guide explains what BO means, how to tell which meaning applies, and what to do about it. It is part of the crochet basics and works alongside our full abbreviations guide.
The Most Common Meaning: Bind Off
In crochet, BO most often stands for bind off, which is simply another way of saying fasten off. It refers to the final step of finishing your work, where you secure the last loop so the whole piece cannot unravel. Bind off is a term borrowed from knitting, where it is very common, and it has carried over into some crochet patterns. So when you see BO at the end of a piece or section, it is telling you to finish off your work, which is exactly the same as fastening off.
How to Bind Off (Fasten Off)
Binding off in crochet is quick and easy. Cut your working yarn, leaving a tail of about six inches, then yarn over and pull that tail all the way through the loop on your hook, and gently tighten. This locks your last stitch so it cannot come undone. You then weave in the tail to secure it fully and hide it. This is the standard way to finish nearly every crochet project, and it is covered step by step in how to fasten off crochet.
The Other Meaning: Bobble
Less commonly, BO is used in some textured stitch patterns as a short abbreviation for bobble, which is a raised cluster stitch that pops off the surface of the fabric. In this case, BO is not about finishing your work at all, but about making a specific decorative stitch within a row. This is why context matters so much. If you want to learn the bobble itself, see how to crochet a bobble stitch and the main bobble stitch guide.
How to Tell Which BO Is Meant
Telling the two meanings apart is usually easy from the context. If BO appears at the very end of a piece or a section, after all the stitching is done, it means bind off, so you finish off your work. If BO appears within a row as one of the stitches you are told to make, it means bobble, a stitch to work. The surest way to be certain is to check the pattern's abbreviation key, which every good pattern includes and which spells out exactly what each abbreviation means.
Why the Confusion Happens
The confusion around BO happens because crochet borrows some terms from knitting and because different designers abbreviate things differently. In crochet, the usual word for finishing is fasten off rather than bind off, so BO for bind off is less common than in knitting, and its use for bobble adds a second possible meaning. This is a good reminder always to read a pattern's abbreviation key before starting, a habit that saves confusion, as stressed in how to read a crochet pattern.
Clearing It Up
So, BO in crochet almost always means bind off, which is the same as fastening off your work, and occasionally it means bobble in a textured stitch pattern. Use the context and the abbreviation key to tell which, and you will never be stuck. Now that you know, finishing your projects and following textured patterns will be that much clearer. Explore more terms and abbreviations in the crochet terms every beginner should know and the rest of the crochet basics.