1) Synthetic opioid 
<chemical> An opioid analgesic with actions and uses similar to morphine. ... Pharmacological action: analgesics, opioid, narcotics. ... Chemical name: 2,6-Methano-3-benzazocin-8-ol, 1,2,3,4,5,6-hexahydro-6,11-dimethyl-3-(2-phenylethyl)- ... (12 Dec 1998) ...