This is the 8371st most frequent Polish word.
pilch
The Polish word "pilch" refers to a "dormouse," a small rodent.
In this sentence, 'Pilch' is used as a proper noun, referring to a potential name of a squirrel or person.
Pilch siedział na gałęzi.
The squirrel sat on the branch.
Here, 'Pilch' refers to the surname of the Polish author Jerzy Pilch.
W szkole czytałem książkę Jerzego Pilcha.
At school, I read a book by Jerzy Pilch.
In this context, 'pilchy' is the plural noun for 'pilch', indicating dormice.