This is the 12397th most frequent Swedish word.
skena
"Skena" means "to bolt" or "run uncontrollably," often used to describe something going out of control, like an animal or a situation.
Here, 'skena' is used to describe the uncontrollable and rapid galloping of a horse.
Hästen började skena över ängen.
The horse started to gallop across the meadow.
In this context, 'skena' is metaphorically describing the train going out of control.
Tåget skenade nästan av spåret.
The train almost derailed off the track.
Here, 'skena' is metaphorically used to describe the uncontrollable increase in intensity or brightness.