tip-on
n.— «One tactic is the tip-on, a small paper square affixed to the cover that highlights an article of interest to readers in that area.» —“Special Promotions Boost Local Newsstand Sales” by Susan Hovey Folio Mar. 1, 1993. (source: Double-Tongued Dictionary)
Further reading
A flashlight emits a steady beam of light. So what’s the flash part of that word about? Also, if you’re a nervous Nellie, you’re skittish and indecisive—both characteristics of an American politician who earned that nickname in the...