rünkvihmapiilvedeks
rünkvihmapiilvedeks is a term that appears to be a neologism, likely originating from a combination of Estonian words. "Rünk" translates to cumulus, while "vihmapiilvedeks" can be broken down into "vihma" (rain) and "piilvedeks" (veils or glimpses). Therefore, a literal translation suggests something akin to "cumulus rain veils" or "cumulus rain glimpses."
The term does not correspond to any established meteorological classification or phenomenon in standard scientific literature.