blatter

noun

1. (countable, uncountable)Blather; foolish talk.
2. (countable, uncountable)A sound of rapid motion.
3. (countable, uncountable)A hard battering of rain.

   “Between the roar of the thunder and the blatter of the rain there were intervals of an astounding still, of an ominous suspense […]”

   “Rain type 17 was a dirty blatter battering against his windscreen so hard that it didn't make much odds whether he had his wipers on or off.”

verb

1. (intransitive)To blather.
2. (intransitive)To hurry or rush noisily.