back number

noun — 2 senses

back number

noun

1

A back issue of a magazine, etc.

Because of war conditions and rigid paper control, it is now impossible for us to keep supplies of recent back numbers.1941 December, “Back Numbers of "The Railway Magazine"”, in Railway Magazine, page 574:

2

Anything considered old-fashioned.

Synonyms: back issue, has-been

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.