This is the 8643rd most frequent Polish word.
pól
"Pol" means "half" in English.
Here, 'pól' (in the altered form 'polu') refers to a field, an unplowed or uncultivated open area in nature. It is a usage describing the physical location.
Chłopiec biega po polu.
The boy is running across the field.
In this sentence, 'pół' indicates a fraction, specifically half of a time duration. It showcases its usage as a numerical adjective.
Potrzeba pół godziny na przygotowanie.
It takes half an hour to prepare.
Here, 'pól' refers to multiple fields, the genitive plural form in Polish. It signifies agricultural or open areas used for farming or dividing lands.