What is Apothecary?

Legal Definition
Apothecary /əˈpɒθkəri/ is one term for a medical professional who formulates and dispenses materia medica to physicians, surgeons and patients. The modern pharmacist (also colloquially referred to as a chemist in British English) has taken over this role and in some languages and regions the word is still used to refer to a retail pharmacy or a pharmacist who owns one. The apothecaries' investigation of herbal and chemical ingredients was a precursor to the modern sciences of chemistry and pharmacology.

In addition to dispensing medicines, the apothecary offered general medical advice and a range of services that are now performed by other specialist practitioners, such as surgeons and obstetricians. Apothecary shops sold ingredients and the medicines they prepared wholesale to other medical practitioners, as well as dispensing them to patients. In 1600s England, they also controlled the trade of tobacco which was imported as a medicine.
-- Wikipedia
Legal Definition
Any person who keeps a shop or building where medicines are compounded or prepared according to prescriptions of physicians or where medicines are sold. Act Cong. July 13, 1866, c. 184, § 9, 14 Stat 119; Woodward v. Ball, 6 Car. & P. 577; Westmoreland v. Bragg, 2 Hili (S. C.) 414; Com. v. Fuller, 2 Walk. (Pat) 550. The term "druggist" properly means one whose occupation is to buy and sell drugs, without compounding or preparing them. The term therefore has a much more limited and restricted meaning than the word "apothecary," and there is little difficulty in concluding that the term "druggist" may be applied in a technical sense to persons who buy and sell drugs. State v. Holmes, 28 La. Ann. 767, 26 Am. Rep. 110; Apothecaries' Co. v. Greenough, 1 Q. B. 803; State v. Donaldson, 41 Minn. 74, 42 N. W. 781.
-- Black's Law Dictionary
Legal Definition
One who makes a business of compounding and selling drugs. See 72 Ky. 569.
-- Ballentine's Law Dictionary