It is a Gallicism, which has been adopted as an expression of admiration and respect. It comes from the French word Chapeau, which means hat and refers to the fact that a sign of admiration was to make the gesture of removing the hat before another person as a sign of respect or admiration. Variant of the pool game where it is about knocking down some pins with the balls.
1º_ Gallicism 'chapó' is actually the Castilianization of chapeau (a type of hat) that is used as an expression of respect or admiration for "taking off your hat". 2º_ It is a variant of the game of billiards, with some bowling ("bowling or bowling"), since it is about knocking down some small pines placed on the cloth. 3º_ Inflection of the verb chapar . See verbs/chapó .
