This is the 832nd most frequent Portuguese word.
pelo
"By the," "through the," or "for the" (contraction of "por" + "o") and "hair" or "fur" (noun).
In this sentence, 'pelo' is the contracted preposition 'por' and the definite article 'o', used to indicate movement through a place.
Eu passei pelo parque ontem.
I passed through the park yesterday.
Here, 'pelo' combines 'por' and 'o' to express reason, cause, or motive, meaning 'for the sake of'.
Ele fez isso pelo bem de todos.
He did this for the good of all.
In this example, 'pelo' is used to indicate the means or path through which something happens, being a contraction of 'por' and 'o' indicating directionality or passage.