noun
banner mounting on samurai armor
Historical term for a fixture at the back of samurai armor used to hold a small banner or identifying flag. Related to 指物 (さしもの) in its armor sense.
See also: 指物 (さしもの)
合当理は、鎧の背に旗指物を取り付けるための金具である。
A 合当理 is a metal fitting for attaching a banner to the back of armor.