This is the 310th most frequent Slovenian word.
tednih
"Of weeks" (genitive plural of "teden," which means "week").
In this sentence, 'tednih' is used in the locative plural case to describe the temporal distance from a point in time.
Nekaj tednih po začetku šolskega leta so imeli učenci že prvi izlet.
A few weeks after the beginning of the school year, the students already had their first trip.
Here, 'tednih' is a locative plural case in Slovenian, used to indicate the time frame within which an event happened.
V zadnjih nekaj tednih je bilo vreme zelo spremenljivo.
In the last few weeks, the weather has been very changeable.
'Tednih' in this example is in the locative plural case to express the current ongoing time period in which an activity occurs.