back number
/ˈbæk ˌnʌmbər/
noun
- An old issue of a magazine, newspaper, or journal.
- The library keeps back-numbers of local newspapers in the basement archive.
- I found a back-number of National Geographic from 1985 at the flea market.
- She collects back-numbers of fashion magazines for her collage art.
- A person or thing that is outdated or no longer popular.
- Some critics called the singer a back-number after her last album flopped.
- His fashion sense is a back-number from the 1990s.
- That old computer is a back-number; nobody uses floppy disks anymore.