back number

English

Noun

back number (plural back numbers)

1. A back issue of a magazine, etc.
   • 1941 December, “Back Numbers of "The Railway Magazine"”, in Railway Magazine, page 574:

     Because of war conditions and rigid paper control, it is now impossible for us to keep supplies of recent back numbers.

2. Anything considered old-fashioned.

Synonyms

• (magazine): back issue
• (something considered old-fashioned): has-been