The action of the verb to flow
"Water flowed gently over the smooth stones in the stream."
"The flowing was gentle and clear after the rain stopped."
present participle of flow
"The river was flowing rapidly down the valley after the heavy rain."
In plain English: Flowing means moving smoothly and continuously, like water running down a river.
"The river flows slowly through the valley."
designed or arranged to offer the least resistant to fluid flow
"a streamlined convertible"
Tending to flow.
"The golden sunlight flowed across the meadow, illuminating every blade of grass."
The word flowing comes from Middle English and is formed by adding the suffix -ing to the verb flow. It describes the action of moving steadily like a liquid or current.