What is Dollar?

Dollar definition and meaning on Dictionary terms:
a paper money, silver or cupronickel coin, and monetary unit of the United States, equal to 100 cents. Symbol: $
a silver or nickel coin and monetary unit of Canada, equal to 100 cents. Symbol: $
any of the monetary units of various other nations, as Australia, the Bahamas, Barbados, Belize, Bermuda, Fiji, Guyana, Hong Kong, Jamaica, Liberia, New Zealand, Singapore, the Solomon Islands, Trinidad and Tobago, and Zimbabwe, equal to 100 cents.
Also called ringgit. a cupronickel coin and monetary unit of Brunei, equal to 100 sen.
a thaler.

a peso.
Levant dollar.
yuan(def 1).
British Slang. (formerly) five-shilling piece; crown. the sum of five shillings.