What is the US dollar index?

The U.S. dollar is predominantly the standard currency unit in which goods are quoted and traded, and with which payments are settled, in the global commodity markets. The U.S. Dollar Index is an important indicator of the dollar's strength or weakness versus a basket of six foreign currencies.

What is a dollar coin called?

The quarter dollar coin is known as two bits, alluding the dollar's origins as the "piece of eight" (bits or reales ). The $1 bill is nicknamed buck or single. The infrequently-used $2 bill is sometimes called deuce, Tom, or Jefferson (after Thomas Jefferson ).

Is the dollar a plural or abbreviation?

A History of the Dollar. New York: Columbia University Press. p. 56. The dollar sign, $, is connected with the peso, contrary to popular belief, which considers it to be an abbreviation of 'U.S.' The two parallel lines represented one of the many abbreviations of 'P,' and the 'S' indicated the plural.