This is the 11489th most frequent Polish word.
jednorazowy
Single-use or disposable.
Here, 'jednorazowy' describes an object designed for single use, in this case, a pen.
Kupiłem jednorazowy długopis do podpisania dokumentów.
I bought a disposable pen to sign the documents.
In this sentence, 'jednorazowy' pertains to a ticket valid for just one-time use.
Ten jednorazowy bilet pozwoli ci podróżować przez jedną godzinę.
This single-use ticket will allow you to travel for one hour.
Here, 'jednorazowy' refers to an event that happened only once, not to be repeated.