fentanyl

noun1

1. •
   A synthetic opioid narcotic analgesic, C₂₂H₂₈N₂O, with pharmacological action similar to morphine that is administered transdermally as a skin patch and in the form of its citrate, C₂₂H₂₈N₂O·C₆H₈O₇, is administered orally or parenterally (as by intravenous or epidural injection); N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]propanamide.

   • Lil Peep died of an overdose of fentanyl and generic Xanax, according to the Pima Country Office of the Medical Examiner. — 2017