This is the 8110th most frequent Polish word.
nysem
"Nysem" is the instrumental singular form of "nys," which means "a Nysa van" (a type of vehicle) in Polish.
In this context, 'nysem' refers to a colloquial term for a small van-type vehicle used for transportation.
Jadę do pracy nysem.
I'm going to work by van.
Here, 'nysem' indicates the mode of transportation, specifically a van used for delivering goods.
Dostarczenie paczek odbyło się nysem.
The delivery of the packages was done by van.
In this sentence, 'nysem' again refers to a van, emphasizing its use for long-distance travel.