clip-on,a.|ˈklɪpɒn|[f.clip v.¹ + onadv.]That is attached or fitted into position by means of a clip. Also fig.1909Chambers'sJrnl.July 478/1A spring clip-on handle is provided, gripping the top and bottom edges of the opened tin, so that it is converted into a mug.1958M. L. Hallet al. Newnes Complete Amat.Photogr.97Usually filters are attached to the lens by means of screw-in or clip-on mounts.1958Listener 13 Nov. 775/2‘Justice’ is simply a clip-on accessory to Olivaw, like a radio on a car.1966J. S. CoxDict.Hairdressing,Clip-on headband, a semi-circular resilient decorated headband of metal or plastic, which clips over the top or front of the head.