noun
accessory; appurtenance
Legal term for a thing that is attached to and serves a principal thing, such as a key to a lock or a remote control to a TV. Not used for fashion accessories.
民法では、従物は主物の処分に従うとされている。
Under the Civil Code, an accessory is deemed to follow the disposition of the principal thing.
家の鍵は建物の従物とみなされる。
The house key is regarded as an accessory to the building.