a synthetic narcotic analgesic, C19H27NO, used chiefly for the relief of moderate to severe pain.
Origin of pentazocine
1960–65; penta- + (benz)azocine, a component of its chemical name
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a powerful synthetic drug used in medical practice as a narcotic analgesic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012