This is the 116th most frequent Italian word.
mio
"My" (possessive adjective/pronoun).
The word 'mio' is used as a possessive adjective modifying 'cappello' (hat), showing ownership.
Questo è il mio cappello.
This is my hat.
Here, 'mio' is used possessively after 'amico' (friend), where it emphasizes the personal connection.
Un amico mio mi ha invitato alla festa.
A friend of mine invited me to the party.
In this sentence, 'mio' characterizes 'difetto tipico' (typical flaw), indicating that the flaw inherently belongs to the speaker.