= C =
1. Unuseable CD produced during failed attempt
at writing to writeable or re-writeable CD media. Certainly
related to the coaster-like shape of a CD, and the relative value
of these failures. "I made a lot of coasters before I got a good
CD." 2. Useless CDs received in the mail from the likes of
AOL, MSN, CI$, Prodigy, ad nauseam.
In the U.K., `beermat' is often used in these senses.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.