- a brand of flunitrazepam.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- trademark a brand of the drug flunitrazepam used as a hypnotic: its ability to render someone unconscious and disoriented on awakening has been exploited by rapists
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
Word Origin and History for rohypnols'
1995, trade name for a powerful insomnia drug.
Online Etymology Dictionary, © 2010 Douglas Harper