We don't have synonyms for pesos yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are peso, pecos and pests.
(n) :
The circulating currency of various Spanish-speaking American countries (Argentina, Chile, Colombia, Cuba, the Dominican Republic, Mexico, and Uruguay) and the Philippines.
(n) :
(historical) A former unit of currency in Spain and Spain's colonies, worth 8 reales; the Spanish dollar.
(n) :
The circulating currency of various Spanish-speaking American countries (Argentina, Chile, Colombia, Cuba, the Dominican Republic, Mexico, and Uruguay) and the Philippines.
(n) :
(historical) A former unit of currency in Spain and Spain's colonies, worth 8 reales; the Spanish dollar.