noun.
The English name of the large silver German coin called thaler: also applied to similar coins of the Low Countries and of Scandinavia; to the large silver coin of Spain, the celebrated “Spanish dollar,” or peso, also called pillar dollar (from its figure of the Pillars of Hercules) and piece of eight (as containing 8 reals); and later to a large silver coin succeeding the Spanish dollar in Spanish America.
noun.
The monetary unit or standard of value of the United States and Canada, containing 100 cents, and equal to about 4s. 1⅓d. English.