This is the 11333rd most frequent Polish word.
hymnu
"Hymnu" is the genitive singular form of the Polish word "hymn," meaning "anthem."
Here, 'hymnu' is in the genitive case, indicating possession or relation—specifically the words belonging to the anthem.
Polacy śpiewali słowa hymnu z dumą.
The Polish sang the words of the anthem with pride.
In this sentence, 'hymnu' is also in the genitive case, used to specify 'fragment' as part of the anthem.
Podczas uroczystości odśpiewano fragment hymnu.
During the celebration, a fragment of the anthem was sung.
Here, 'hymnu' appears in the genitive case to show relation between 'history' and 'national anthem'.