Concept:
Aspirin is a non-steroidal anti-inflammatory drug.
Step 1: Analgesic action means pain relief.
Step 2: Antipyretic action means reduction of fever.
Step 3: Anti-inflammatory action means reduction of inflammation.
Step 4: Aspirin inhibits cyclooxygenase enzymes and reduces prostaglandin synthesis.
Step 5: Therefore, aspirin is used as an analgesic, antipyretic and anti-inflammatory drug.
\[
\boxed{\text{Analgesic, antipyretic and anti-inflammatory drug}}
\]