"acids" in the noun sense
any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
2. acid, back breaker, battery-acid, dose, dot, Elvis, loony toons, Lucy in the sky with diamonds, pane, superman, window pane, Zen
street name for lysergic acid diethylamide
Source: WordNet® (An amazing lexical database of English)
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