What is one of a class of organic bases, C8H11N, usually pungent oily liquids, belonging to the pyridine series, and obtained from bone oil, coal tar, naphtha, and certain alkaloids called?

collidine — One of a class of organic bases, C8H11N, usually pungent oily liquids, belonging to the pyridine series, and obtained from bone oil, coal tar, naphtha, and certain alkaloids. (Webster's 1913.)

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