Accompanying as a subordinate; aiding in a secondary way; additional; connected as an incident or subordinate to a principal; contributing or contributory; said of persons and things, and, when of persons, usually in a bad sense; as, he was accessory to the riot; accessory sounds in music.
1 That which belongs to something else deemed the principal; something additional and subordinate. “The aspect and accessories of a den of banditti.” Carlyle.
Same as Accessary, n.
3 (Fine Arts)
Anything that enters into a work of art without being indispensably necessary, as mere ornamental parts. Elmes.