This is the 7170th most frequent Portuguese word.
last
The Portuguese word "last" does not exist; likely, you mean the English "last" translated to Portuguese, which is "último" (as an adjective) or "durar" (as a verb).
Here, 'último' means 'last in a sequence', referring to the final book in the series.
Este é o último livro da série.
This is the last book of the series.
'Últimas' translates to 'last', indicating the news items that were reported most recently.
As últimas notícias são muito preocupantes.
The last news is very concerning.
'Durar' is associated with 'last', defining the duration of an event or meeting.