Top Definition
the state of being "under", either passed out, blacked out, or both, due to excessive consumption of the recreational beverage ethyl alcohol.
Jim had no clue which of us drew dicks on his face last night, as he was under alcosthesia.
by aquajerk/surly October 31, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×