Word Study
    picoline
CIDE DICTIONARY
picoline, n. [L. pix, picis, pitch + oleum oil + -ine.]. 
                                            
                                         Any one of three isometric bases (C6H7N ) related to pyridine, and obtained from bone oil, acrolein ammonia, and coal-tar naphtha, as colorless mobile liquids of strong odor; -- called also methyl pyridine .                                                                                 [1913 Webster]                                                                                                                    
                                                                                    
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