n.1 the chief monetary unit in the US, Canada, and Australia.
2 the chief monetary unit of certain countries in the Pacific, West Indies, SE Asia, Africa, and S. America.
Phrases and idioms:
dollar area the area in which currency is linked to the US dollar. dollar diplomacy diplomatic activity aimed at advancing a country's international influence by furthering its financial and commercial interests abroad. dollar gap the excess of a country's import trade with the dollar area over the corresponding export trade. dollar mark (or sign) the sign $, representing a dollar. dollar spot
1. a fungal disease of lawns etc.
2 a discoloured patch caused by this.
Etymology: LG daler f. G Taler, short for Joachimstaler, a coin from the silver-mine of Joachimstal in Czechoslovakia