Source : Webster's Revised Unabridged Dictionary (1913)

Peso \Pe"so\, n. [Sp.]
   A Spanish dollar; also, an Argentine, Chilian, Colombian,
   etc., coin, equal to from 75 cents to a dollar; also, a pound
   weight.

Source : WordNet®

peso
     n 1: the basic unit of money in Uruguay; equal to 100 centesimos
          [syn: {Uruguayan peso}]
     2: the basic unit of money in the Philippines; equal to 100
        centavos [syn: {Philippine peso}]
     3: the basic unit of money in Mexico; equal to 100 centavos
        [syn: {Mexican peso}]
     4: the basic unit of money in Guinea-Bissau; equal to 100
        centavos [syn: {Guinea-Bissau peso}]
     5: the basic unit of money in the Dominican Republic; equal to
        100 centavos [syn: {Dominican peso}]
     6: the basic unit of money in Cuba; equal to 100 centavos [syn:
         {Cuban peso}]
     7: the basic unit of money in Colombia; equal to 100 centavos
        [syn: {Colombian peso}]
     8: the basic unit of money in Chile; equal to 100 centesimos
        [syn: {Chilean peso}]