English noun: Ir | |||
1. | Ir (substance) a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium | ||
Synonyms | atomic number 77, iridium | ||
Broader (hypernym) | metal, metallic element | ||
2. | IR (group) a board of the British government that administers and collects major direct taxes | ||
Synonyms | Inland Revenue | ||
Broader (hypernym) | administrative body, administrative unit | ||
Domain region | Britain, Great Britain, U.K., UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland | ||