Dover's powder

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A powdered drug containing ipecac and opium, formerly used to relieve pain and induce perspiration.

from The Century Dictionary.

• See powder.

from the GNU version of the Collaborative International Dictionary of English.

• (Med.) A powder of ipecac and opium, compounded, in the United States, with sugar of milk, but in England (as formerly in the United States) with sulphate of potash, and in France (as in Dr. Dover's original prescription) with nitrate and sulphate of potash and licorice. It is an anodyne diaphoretic.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun medicine, dated A powder of ipecac and opium formerly used to treat colds and fevers.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a medicinal powder made essentially of ipecac and opium; formerly used to relieve pain and induce perspiration