röyryillä
Röyryillä is a Finnish verb that describes a specific type of movement or action. It generally translates to "to surge," "to swell," or "to heave" in English, often in the context of liquids, but can also apply to other phenomena. The verb implies a forceful, upward, and often turbulent motion.
In the context of liquids, röyryillä is commonly used to describe the action of water. For example,
The word's etymology is related to the concept of a "röyhy," which can refer to a plume,