Source : Webster's Revised Unabridged Dictionary (1913)

Aspirin \As"pi*rin\, n. (Pharm.)
   A white crystalline compound of acetyl and salicylic acid
   used as a drug for the salicylic acid liberated from it in
   the intestines.

Source : WordNet®

aspirin
     n : the acetylated derivative of salicylic acid; used as an
         analgesic anti-inflammatory drug (trade names Bayer and
         Empirin) usually taken in tablet form; used as an
         antipyretic; slows clotting of the blood by poisoning
         platelets [syn: {acetylsalicylic acid}, {Bayer}, {Empirin}]

Source : Free On-Line Dictionary of Computing

Aspirin
     
         A {freeware} language from {MITRE
        Corporation} for the description of {neural networks}.  A
        compiler, bpmake, is included.  Aspirin is designed for use
        with the {MIGRAINES} interface.
     
        Version: 6.0, as of 1995-03-08.
     
        {(ftp://ftp.cognet.ucla.edu/alexis/)}.
     
        (1995-03-08)