The reverse side of a cassette tape or a phonograph record, especially a vinyl single, often containing songs not considered for airplay.
Any song included on a compact disc single, besides the first song (the A-side).
The left-hand page of a book of a script which reads from left to right, usually having an even page number.
The back side of a flat object which is to be examined visually, as for reading, such as a sheet, leaf, coin or medal;