liner
n.— «The dealers search for coins that are the “sliders,” or the “liners,” as they are called, the ones that might glint in such a way on a certain day to become a 65, instead of a 64, in the eye of the right coin grader. It’s not illegal, but sins have been committed in the name of grading arbitrage in the high-dollar, fast-paced rare coin world.» —“Coin fund profits for state hinged on graders’ opinions” by Christopher D. Kirkpatrick Toledo Blad (Ohio) May 30, 2005. (source: Double-Tongued Dictionary)
Further reading
What kind of book do people ask for most often in prison? Romance novels? No. The Bible? No. The most requested books by far are … dictionaries! A number of volunteer organizations gather and distribute used dictionaries to help inmates with...
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...