This is the 16046th most frequent Polish word.
tygodniową
"Weekly" or "week-long."
Here, 'tygodniową' describes the adjective form 'one-week' related to the noun 'pracę'.
Zaczynam tygodniową pracę nad projektem.
I am starting a one-week work on the project.
In this sentence, 'tygodniową' modifies 'subskrypcję', indicating the duration of the subscription.
Mam tygodniową subskrypcję na gazetę.
I have a one-week subscription to the newspaper.
'tygodniową' here is used as an adjective to describe the noun 'podróż', specifying its length.