accessory /ak'sesan; aek'sesan/ n (pl -ries) 1 = accessary. 2 sth extra, helpful, useful, but not an essential part of: 附件; 附屬品： the access sories of a bicycle, eg the lamp, a pump; 腳踏車的附件 (如車燈，打氣筒); the accessories of a woman's dress, eg gloves, a handbag. 一件女裝的配件 (如手套，手提包) 。