It is possible that there's a slight misunderstanding or error in the wording. Here's why:
* "Mirongo" means "ten" or "tens" in Kikuyu. It's often used in the context of counting or describing numbers in groups of ten.
* "Iri" is a word that could mean "this," "here," or "is" depending on the context.
To accurately translate "mirongo iri," we need more context.
For example:
* "Mirongo iri nini?" translates to "How many tens (are there)?"
* "Mirongo iri mbili" translates to "Two tens" or "Twenty".
Could you please provide more context or the full sentence where you encountered this phrase? I'd be happy to help you understand the meaning.