accessory

adj. supplementary, auxiliary, aiding in a secondary way

n. supplementary part; something which complements an outfit (i.e. purse, scarf, etc.); partner in crime, one who helps another commit a crime (Law)

Accessory may refer to:Accessory (legal term), a person who assists a criminal but is not present at the crimeAccessory (band), with members Dirk Steyer and Ivo LottigFashion accessory, i.e. an item used to complement a fashion or styleVideo game accessory, a piece of hardware used for playing video gamesAccessory nucleus, in anatomy, a cranial nerve nucleusAccessory nerveAccessory suite, a secondary dwelling on a parcel of land.
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Noun
1. clothing that is worn or carried, but not part of your main clothing
(synonym) accoutrement, accouterment
(hypernym) clothing, article of clothing, vesture, wear
(hyponym) belt
2. a supplementary component that improves capability
(synonym) appurtenance, supplement, add-on
(hypernym) component, constituent, element
(hyponym) auto accessory
3. someone who helps another person commit a crime
(synonym) accessary
(hypernym) criminal, felon, crook, outlaw, malefactor
(hyponym) abettor, abetter
Adjective
1. relating to something that is added but is not essential; "an ancillary pump"; "an adjuvant discipline to forms of mysticism"; "The mind and emotions are auxilliary to each other"
(synonym) adjunct, ancillary, adjuvant, appurtenant, auxiliary, subsidiary
(similar) supportive

(n.)
That which belongs to something else deemed the principal; something additional and subordinate.
  

(n.)
Same as Accessary, n.
  

(n.)
Anything that enters into a work of art without being indispensably necessary, as mere ornamental parts.
  

(a.)
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.
  

adjective
(thing) which helps, without being most important
accessory nerve = eleventh cranial nerve which supplies the muscles in the neck and shoulders
accessory organ = organ which has a function which is controlled by another organ