This is the 141st most frequent Polish word.
jedynie
"Jedynie" means "only" or "solely" in English.
Here, 'jedynie' is used to mean 'only', emphasizing the limited amount of time available.
Mam jedynie pięć minut.
I have only five minutes.
In this case, 'jedynie' emphasizes that the subject serves a singular, limited purpose as an introduction.
To jest jedynie wstęp do dalszej dyskusji.
This is solely an introduction to the further discussion.
Here, 'jedynie' is used to signify that the concern extends beyond the immediately mentioned aspect (money).