Well I've been here a little longer than that and I have a very good memory. Party started being used as a verb in the late sixties when drug use went through the roof. Although legal, I also include alcohol as a drug. Back then, the mere act of being sh*tfaced was known as partying, even if you just laid around like a zombie.
If you can provide earlier evidence via books, movies, tv shows, etc. I'll gladly change my stance. Until then I'll stick with my 'nincompoop' analysis.
BTW, your link neither supports nor disputes what I say.
“BTW, your link neither supports nor disputes what I say. “
Is there another dictionary that you will believe or is the English language whatever YOU decide?