projecting signboard; side signboard
A signboard that extends outward from the wall of a building, often seen on traditional shopfronts.
老舗の店先には、袖看板が風情を添えている。
A projecting signboard adds charm to the front of the long-established shop.
Compound of 袖 (sode, 'sleeve') and 看板 (kanban, 'signboard'), referring to a signboard that extends like a sleeve from the side of a building.