A caustic, sour, biting, or bitter quality.
The quality or state of being acid.
Sourness; tartness; sharpness to the taste.
Excessive acid quality, as in gastric secretions.
Something that causes bitterness or affliction; a cause of mortification or vexation.
An intensely bitter herb (Artemisia absinthium and similar plants in genus Artemisia) used in medicine, in the production of absinthe and vermouth, and as a tonic.