This is the 14135th most frequent Polish word.
pościeli
"Bedding."
In this sentence, 'pościel' refers to bedding, encompassing items such as sheets, blankets, and other fabric covers used on a bed.
Kupuję nową pościel na zimę.
I am buying new bedding for the winter.
Here, 'pościel' denotes the fabric items on the bed that might require regular cleaning and replacing.
Musisz zmienić pościel, ponieważ jest już brudna.
You need to change the bedding because it is already dirty.
In this instance, 'pościel' refers specifically to cotton bedding as a desirable material choice for comfort.