A note of currency worth one dollar.

A special one-day sale during which retail goods are offered for one dollar or at very reduced prices. / (slang, by extension) An occasion considered special or worth enjoying.

plural of dollar day

(historical) A silver dollar stamped to attest its purity.

(historical) A silver coin minted as a trade coin by various countries to facilitate trade with China and the Orient.

(politics, US, Canada) The influence of money on politics and on government / (economics, US, Canada) The ability of consumers to influence the economy and business decisions by their spending

(historical) A Spanish-American peso or piece of eight issued by Charles III (1759–88) and Charles IV (1788–1808) of Spain.

(dated) Very secure and dependable. / (dated) Sturdy, well made.

Synonym of US dollar

(historical) A coin used in the early history of Prince Edward Island and New South Wales, made by punching the middle out of a Spanish dollar; the punched-out middle part was used as a smaller coin called a dump.