1. The bureau of the Treasury Department responsible for tax collections
   - Internal Revenue Service

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

1. A board of the British government that administers and collects major direct taxes
   - Inland Revenue [UK]

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

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

Encyclopedia: IR

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• 8 May 1945
• 8-membered
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