ac‧ces‧so‧ry plural accessories [countable]
1T [usually plural]D something such as a piece of equipment or a decoration that is not necessary, but that makes a machine, car, room etc more useful or more attractive:
bathroom accessories such as mirrors and towel-rails
2DC [usually plural] something such as a bag, belt, or jewellery that you wear or carry because it is attractive:
fashion accessories
a set of fully matching clothes and accessories
3 someone who helps a criminal, especially by helping them hide from the police
accessory to
an accessory to murder
an accessory before/after the fact (=someone who helps a criminal before or after the crime)

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