putazo

• IPA^(key): /puˈtaθo/ [puˈt̪a.θo] (Spain)
• IPA^(key): /puˈtaso/ [puˈt̪a.so] (Latin America, Philippines)
• Rhymes: -aθo (Spain)
• Rhymes: -aso (Latin America, Philippines)
• Syllabification: pu‧ta‧zo

Unclear, but most likely an apheresis of zapotazo.

putazo m (plural putazos)

1. (Mexico, vulgar) a sharp blow, punch or strike; thump; thwack; whack; bash

From puto +‎ -azo.

putazo m (plural putazos)

1. (vulgar, derogatory, at least in Argentina) augmentative of puto (“faggot”)

• “putazo”, in Diccionario de americanismos [Dictionary of Americanisms] (in Spanish), Association of Academies of the Spanish Language [Spanish: Asociación de Academias de la Lengua Española], 2010