Definitions
1.nounA sour substance.
2.nounAny of several classes of compound having the following properties:
3.nounLysergic acid diethylamide (LSD)
4.adjectiveSour, sharp, or biting to the taste; tart; having the taste of vinegar."acid fruits or liquors"
5.adjectiveSour-tempered.
6.adjectiveOf or pertaining to an acid; acidic.
7.adjectiveDenoting a musical genre that is a distortion (as if hallucinogenic) of an existing genre, as in acid house, acid jazz, acid rock.