1. (noun) a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium

• atomic number 77
• iridium

2. (noun) a board of the British government that administers and collects major direct taxes

• inland revenue

1. (noun) a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium

• metal
• metallic element

2. (noun) a board of the British government that administers and collects major direct taxes

• administrative body
• administrative unit