This is the 109th most frequent German word.
letzten
"Letzten" means "last" or "final" in English.
'Letzten' modifies 'Jahren' (years) to refer to a time frame extending up to the present.
In den letzten Jahren habe ich viel gelernt.
In the last few years, I have learned a lot.
'Letzten' modifies 'Äpfel' (apples) to indicate the final items in a series or set.
Er hat die letzten drei Äpfel genommen.
He took the last three apples.
Here, 'letzten' modifies 'Wochenende' (weekend) to indicate the temporal aspect, specifically referring to the previous weekend.