'generic drug' definitions:

Definition of 'generic drug'

From: WordNet
noun
When the patent protection for a brand-name drug expires generic versions of the drug can be offered for sale if the FDA agrees; "generic drugs are usually cheaper than brand- name drugs" [ant: brand-name drug, proprietary drug]

Definition of 'generic drug'

From: GCIDE
  • generic drug \ge*ner"ic drug`\, n. A medication sold under its generic name; -- usually legal only after the patent has expired, or if no patent was issued for the substance. Generic drugs are usually less expensive than proprietary medications. [PJC]