acid 

A substance which has a high concentration of positively-charged hydrogen ions.

Vinegar is a weak acid.

acid by Polychromophilia December 9, 2004

acid 

a drug which jesus gave away for free, the church wanted a monopoly on the drugs so they killed him.

acid is good to take before lectures.
I had to put my friend in hospital on a bad trip.

acid by james kirk April 17, 2006

ACID 

A brand of fine cigars by Drew Estate. They are the leader in the Herbal & Botanical Aromatic Cigar Market. ACID cigars are all hand crafted using the finest tobaccos and over 140 botanicals, herbs, and essential oils.

ACID also has a racing team.

http://acidcigars.com/

"I'm going to smoke a blue-label ACID; They're delicious"

"The only way to understand ACID, is to experience it."

ACID by Nathan Heller July 25, 2008

acid 

1.synthetic heaven
2. a proton donor
3.my god
4.something hard to find but well worth it

some of us prefer edgey days

acid by aeztek December 27, 2004

acid 

liquid form of lsd, a hallucinogen that can be heaven itself if your mentality is right. it can open new doors, a different way of thinking.

look at that pink elephant walking around the room!!!

acid by pyro May 17, 2004

Acid 

Acid - Crazy ass drug, I'm on it alot, it causes hallucinations and is really fun.

"When you're high you never, ever wanna come down..." Axle Rose

Acid by Acid Trippin May 13, 2005

acid 

A drug that makes people see fuckass things

"jim was on acid and saw the street light blink at him"

acid by Kim October 16, 2003