Definition of "papaverine" []

• A nonaddictive opium derivative, C20H21NO4, used medicinally to relieve spasms of smooth muscle. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Some men were also given injections of a drug called papaverine, a muscle stimulant that can boost erections."
• "Diseases such as papaverine, and the tongue: so does this formulation harder erections."
• "Over the next few minutes, Snyder gave the president amyl nitrite to sniff and injections of papaverine hydrochloride, morphine tartrate, heparin, and, later, a second shot of morphine."