This is the 414th most frequent Italian word.
spiegato
"Spiegato" means "explained" in English.
Here, 'spiegato' is attributed to the book as the subject performing the act of explaining, figuratively through its content.
Il libro mi ha spiegato come risolvere il problema.
The book explained to me how to solve the problem.
'Spiegato' appears in the pluperfect tense, combined with 'aveva,' to denote an action completed before another past action.
Aveva spiegato bene le regole prima di iniziare il gioco.
He had explained the rules well before starting the game.
In this sentence, 'spiegato' is the past participle of the verb 'spiegare,' meaning 'to explain.' It is used to indicate an action that has been completed in the past.