From Longman Dictionary of Contemporary Englishclip-onˈclip-on adjective [only before noun] ATTACHattached to something with a clip clip-on earrings —clip-on noun [countable]
Examples from the Corpus
clip-on• A clip-on bobbin with a Betalight is used at night, with the Optonic of course.• On such occasions you can not afford the time, nomatterhow little, to set up a clip-on bobbin.• Fellas, no clip-on bow ties.• The transistor should have a clip-on heatsink.• One of the first that catches the eye is the range of clip-on panels that are supplied with the machine.• Before setting off, when all had been packed away, I unwittingly slipped my clip-on sun-glasses into my back pocket.• I was damned if some nineteen-year-old pipsqueak with zits and a clip-on tie was going to make me feel loathsome.• The interviewer wore a short-sleeved white shirt and clip-on tie, which made him look like a used-car salesman. 