Infrangono comes from the verb infrangere, meaning to break or shatter, often used for waves crashing. It's a more poetic and less common word than simply saying 'break'.
In the song, Marco Mengoni sings, "E insegnami a fluire come le onde che si infrangono continuamente in fondo al dolce niente" (And teach me to flow like the waves that continuously break at the bottom of the sweet nothing). This imagery evokes a sense of surrender and continuous movement, making it a beautiful and memorable word.
Marco Mengoni asks someone close to him to shield him from everything that keeps him small: long winters, doubts, cynicism, the mistakes he knows he will repeat.
The chorus turns that plea into gratitude. 'You are my light,' he sings, the one warmth that keeps shining inside him even through his darkest, longest nights, when everything else keeps changing.
By the end he is not just asking to be protected. He is asking to learn how to shine that same way himself, the way the sun sets each evening only to rise again.