1. Noun. (pharmaceutical drug) A particular narcotic painkiller. ¹
¹ Source: wiktionary.com
Medical Definition of Butorphanol
1. A synthetic morphinan analgesic with narcotic antagonist action. It is used in the management of severe pain.
Pharmacological action: analgesics, opioid, antitussive agents, narcotic antagonists, narcotics.
Chemical name: Morphinan-3,14-diol, 17-(cyclobutylmethyl)-
(12 Dec 1998)