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Noun: IRS
  1. The bureau of the Treasury Department responsible for tax collections
    - Internal Revenue Service
Noun: Ir
  1. A heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
    - iridium, atomic number 77

Type of: agency, authority, bureau, federal agency, government agency, metal, metallic element, office

Part of: Department of the Treasury, Treasury, Treasury Department, United States Treasury

Encyclopedia: IRS

Ir