Possible interpretations:
* "Miaow" in Spanish: "Miadas" could be a misspelling of "maullidos," which is the Spanish word for "meows."
* "Miaow" in Portuguese: It could also be a misspelling of "miaus," the Portuguese word for "meows."
* A name: "Miadas" could be a name, possibly of Spanish or Portuguese origin.
To understand what "miadas" means, please provide more context. What language is it from? What is the sentence or phrase it appears in?