blatter

plural blatters

1. countableuncountableBlather; foolish talk.
2. countableuncountableA sound of rapid motion.
3. countableuncountableA 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 […]

   1901, Good Words, volume 42, page 7

   1 more example

   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.

   1984, Douglas Adams, So Long, and Thanks for All the Fish (The Hitchhiker's Guide to the Galaxy), page 8

present singular third person blatters · participle present blattering · participle past blattered · past blattered

1. intransitiveTo blather.
2. intransitiveTo hurry or rush noisily.