This is the 386th most frequent Italian word.
miei
"Mine" (plural, masculine).
In this sentence, 'miei' is a possessive adjective in Italian, indicating that the cats belong to the speaker.
I miei gatti sono molto affettuosi.
My cats are very affectionate.
Here, 'miei' functions as a possessive adjective for 'cugini', specifying that the cousins referred to are those of the speaker.
I miei cugini vivono in Germania.
My cousins live in Germany.
In this example, 'miei' as a possessive adjective describes 'libri', denoting possession of the books by the speaker.