papierowemu
papierowemu is a grammatical form in Polish, not a standalone word with a separate meaning. It is the masculine and neuter singular dative form of the adjective papierowy, which means "paper" or "made of paper." The form appears when the adjective modifies a masculine or neuter noun in the dative case.
In Polish, adjectives decline to agree with the nouns they describe in gender, number, and case. Therefore,
Common usage involves describing objects, people, or concepts that are characterized as being made of paper
In summary, papierowemu serves as the dative singular form of papierowy for masculine and neuter nouns, reflecting