Definition of peso in US English:



  • The basic monetary unit of Mexico, several other Latin American countries, and the Philippines, equal to 100 centésimos in Uruguay and 100 centavos elsewhere.

    • ‘Now, he is told, his savings have been converted into pesos, currently worth a third of a dollar, and he cannot touch them until next year.’
    • ‘The Uruguayan peso, whose value has halved since the middle of June, plunged even further when foreign exchange controls were lifted.’
    • ‘Mexican pesos and US dollars are interchanged at the general exchange rate of 10 pesos per $.’
    • ‘Cuba now has an odd dual economy in which some stores accept only pesos and others accept only dollars.’
    • ‘At the height of vote counting in the Congress last week, the peso tumbled to an all-time low of 56.43 pesos to the U.S. dollar.’


Spanish, literally ‘weight’, from Latin pensum ‘something weighed’, from the verb pendere ‘weigh’.