Definition of "stick-on" []

• Of something (a paper label or postage stamp) gummed in advance (adjective)

WordNet. Princeton University. 2010.

• "“What’s with all the dots?” asked Amy, referring to the stick-on dots of various colors that adorned each of the hundreds of Post-it notes."
• "Stickybits makes QR code blocks for you that get sent to you as a stick-on."
• "You can also buy a sheet of stick-on diamonds for about a dollar."