the title of a great beatles song!!!
the beatles rock!

a completely genius song written by the greatest band on earth

"yesterday, all my troubles seemed so far away
now it looks although theyre here to stay
oh i believe in yesterday

suddenly, im not half the man i used to be
theres a shadow hanging over me
oh yesterday came suddenly

WHY SHE HAD TO GO, I DONT KNOW, SHE WOULDNT SAY
I SAID SOMETHING WRONG, NOW I LONG FOR YESTERDAY..."

-THE BEATLES(GO RINGO!)

the previous day
the feeling of nostalgia

Dated. Behind the times. Out of fashion.

Passe, not in fashion

(University setting) the last time a class met, whether or not that was the day preceding today.