the.com/obi

means A wide sash, traditionally made of stiff, often elaborately woven or dyed fabric, worn wrapped around the waist over a kimono and tied in back.

from The word comes directly from Japanese 帯 (obi), meaning sash or belt, a term that has been used for this garment accessory for centuries as part of traditional dress. It entered English usage as Western contact with Japan grew, particularly from the 19th century onward, borrowed whole rather than translated — one of those words that slipped into English simply because no native term captured the specific object, construction, and ceremony of it.