This is the 181st most frequent Italian word.
quattro
"Quattro" means "four" in English.
Here, 'quattro' denotes the time of day in hours.
Arriverò alle quattro di pomeriggio.
I will arrive at four in the afternoon.
Here, 'quattro' specifies the measurement in kilometers.
Abbiamo fatto una passeggiata di quattro chilometri.
We took a walk of four kilometers.
Here, 'quattro' is used as a cardinal number indicating the quantity of chairs.