This is the 7119th most frequent Swedish word.
rille
"Rille" in Swedish refers to a groove, channel, or furrow.
Here, 'rille' refers to a physical groove found in a vinyl record that guides the needle.
Rillen i skivan gjorde att nålen inte hoppade.
The groove in the record made the needle not jump.
In this sentence, 'rillor' is used to denote small grooves or channels on the surface of a metal object.
Han studerade de små rillorna i metallstycket noggrant.
He studied the small grooves in the metal piece carefully.
Here, 'rillor' describes natural grooves or channels formed by the river's erosion activity in rock.