"dollar" an bayyana shi da: ainihin rukunin kuɗi na Amurka, Kanada, Ostiraliya, da wasu ƙasashe, daidai yake da cent 100. kowane nau'ikan kuɗi na yau da kullun na wasu ƙasashe, kamar Mexico, Japan, ko Taiwan, waɗanda kuma ana kiran su dala. coin ko lissafin wakiltar dala ɗaya. /li>Kalmar "dollar" ta samo asali ne daga kalmar Jamusanci "Thaler," wanda wani nau'i ne na tsabar azurfa da aka yi amfani da shi a Turai a karni na 16 da 17. An yi amfani da Thaler sosai a ƙasashen da Amurka ta yi wa mulkin mallaka kuma daga ƙarshe ya zama tushen dalar Amurka.