ˈsell-by date noun [countable] British English

1. the date stamped on a food product, after which it should not be sold:
a yoghurt two days past its sell-by date

2. informal a time beyond which something or someone is no longer interesting or useful:
This type of games console is starting to look well past its sell-by date.

[TahlilGaran] Dictionary of Contemporary English ▲