This is the 3795th most frequent Dutch word.
twaalfde
Twelfth.
Here, 'twaalfde' is used as an ordinal number to indicate position in a sequence.
Ik kwam als twaalfde aan in de rij.
I arrived twelfth in line.
In this sentence, 'twaalfde' is again an ordinal number, specifying order in a fixed series, specifically the calendar months.
De twaalfde maand van het jaar is december.
The twelfth month of the year is December.
Here, 'twaalfde' conveys the sequence in counting occurrences of an event.