What is another word for sash starting with O?

There isn't a common word for sash starting with "O". Sash is a unique word with a specific meaning.

However, you might be thinking of something similar, like:

* Obi: A wide sash worn in traditional Japanese clothing.

* Overgarment: A loose outer garment, which might be held closed with a sash.

If you can give me more context about how you're using the word "sash," I might be able to suggest a more fitting alternative starting with "O".