GNU Collaborative International Dictionary of English

Found one definition

1.       
   ibuprofen n. a nonsteroidal anti-inflammatory medicine used to relieve the pain of arthritis and as an analgesic and antipyretic; Advil and Motrin and Nuprin are trademarks of brands of ibuprofen tablets.
   Syn. -- isobutylphenyl propionic acid, Advil, Motrin, Nuprin.
   
   [WordNet 1.5]