1 [C] (Symbol $) the unit of money in the US, Canada, Australia and several other countries:
You will be paid in American dollars.
compareBUCK
2 [C] a BANKNOTE or coin worth one dollar:
Do you have a dollar? * a dollar bill
3 (the dollar) [sing.] (finance) the value of the US dollar compared with the value of the money of other countries:
The dollar closed two cents down.
IDIOMS see BETv., MILLION
