Wordnet 3.0
NOUN (1)
1. 
 trade names of a narcotic analgesic that can be inhaled and that acts on the central nervous system and may become addictive; 
 used as a veterinary anesthetic and with other drugs before, during, and after surgery; 
 also used as a nonlethal gas to incapacitate people in hostage situations; 
 also abused as a recreational drug; 
[syn: Fentanyl, Sublimaze]
WordNet (r) 3.0 (2006):
Fentanyl
    n 1: trade names of a narcotic analgesic that can be inhaled and
         that acts on the central nervous system and may become
         addictive; used as a veterinary anesthetic and with other
         drugs before, during, and after surgery; also used as a
         nonlethal gas to incapacitate people in hostage situations;
         also abused as a recreational drug [syn: Fentanyl,
         Sublimaze]