noun

1. Something that belongs to part of another main thing; something additional and subordinate, an attachment.

   "the accessories of a mobile phone"

2. An article that completes one's basic outfit, such as a scarf or gloves.

3. A person who is not present at a crime, but contributes to it as an assistant or instigator.

4. Something in a work of art without being indispensably necessary, for example solely ornamental parts.