pocztkowa
Pocztkowa is not a recognized Polish word in standard dictionaries. It is generally treated as a nonstandard form, a misspelling, or a dialectal variant of the feminine adjective pocztowa, which means "postal" and is used to describe feminine nouns such as kartka pocztowa (postcard) or usługa pocztowa (postal service).
The apparent root is poczta or pocztowy, related to the postal system, with the typical feminine ending
Because it does not have an independent meaning, the term may appear only as a typographical error,