dol ‧ lar S1 W2 /ˈdɒlə $ ˈdɑːlər/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Dutch ; Origin: daler , from German joachimstaler , from Sankt Joachimsthal , name of a Bavarian town where the coins were first made ]
1 . the standard unit of money in the US, Canada, Australia, and some other countries, divided into 100 ↑ cent s : symbol $:
It cost three dollars.
a ten-dollar bill
You can pay in dollars or euros at the airport.
2 . the dollar the value of US money in relation to the money of other countries:
The pound has risen against the dollar (=increased in value in relation to the dollar) .
⇨ you can bet your bottom dollar at ↑ bet 1 (4), ⇨ feel/look like a million dollars at ↑ million (4)