A coaster may refer to any of the following:

  1. Coaster is slang describing an AOL compact disc or a disc that’s no longer good because of scratches or a failure during its creation. The term coaster comes from the coaster commonly used to keep watermarks from being made on tables from drinks.

  2. A coaster describes a recordable disc that became bad after a burn fails.

CD-R, CD terms, Compact disc, Computer slang

  • How to burn or create a CD or DVD on a computer.
  • Computer CD-R and CD-RW help and support.