The Collaborative International Dictionary of English v.0.48:

Accessory \Ac*ces"so*ry\, n.; pl. Accessories.
   1. That which belongs to something else deemed the principal;
      something additional and subordinate. "The aspect and
      accessories of a den of banditti." --Carlyle.
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   2. (Law) Same as Accessary, n.
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   3. (Fine Arts) Anything that enters into a work of art
      without being indispensably necessary, as mere ornamental
      parts. --Elmes.
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   Syn: Abettor; accomplice; ally; coadjutor. See Abettor.
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