This is the 203rd most frequent Portuguese word.
outubro
"Outubro" is the Portuguese word for "October."
The word 'outubro' is used as a date indicator, specifically naming a month of the year.
Em outubro, as folhas caem das árvores no hemisfério norte.
In October, leaves fall from the trees in the northern hemisphere.
Here, 'outubro' specifies a month for a specific date.
Meu aniversário é no dia 15 de outubro.
My birthday is on October 15th.
In this sentence, 'outubro' refers to the entire month in a general cultural context.