Aspirin /(?)/

As·pi·rin

Aspirin

n.
  1. A white crystalline compound of acetyl and salicylic acid used as a drug for the salicylic acid liberated from it in the intestines. It is widely used as a drug for relief of pain and alleviation of fever. It has analgesic, antipyretic, and anti-inflammatory properties, and is one of a class of agents called non-steroidal anti-inflammatory drugs (NSAIDs). The name was originally a trade name, but has become the preferred name for the substance. (Pharm.)