Do the ironing, but cut down the quantity (8)
I believe the answer is:
decrease
'do' is the definition.
The answer and definition can be both related to natural events as well as being singular nouns.
Maybe you can see an association between them that I can't see?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for decrease that I've seen before include "subsidence" , "Deminish, lessen" , "Diminish, lessen" , "Reduce in size" , "Go down" .)