yesterday yesterday /ˈjɛstɝdi/

adverb

1. () On the day preceding today  ( yesterday )
   on the day preceding today
    Yesterday the weather was beautiful
   yesterday the weather was beautiful
   
2. In the recent past; only a short time ago  ( yesterday )
   in the recent past; only a short time ago
    I was not born yesterday!
   I was not born yesterday!
   

noun

1. () The day immediately before today  ( yesterday )
   the day immediately before today
    It was in yesterday's newspapers
   it was in yesterday's newspapers
   
2. The recent past  ( yesterday )
   the recent past
    Yesterday's solutions are not good enough
   yesterday's solutions are not good enough
    We shared many yesterdays
   we shared many yesterdays