Use iron to get fewer? (8)
I believe the answer is:
decrease
'use' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps there's a link between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for decrease that I've seen before include "cut back" , "Plummet" , "Make or become less" , "Make smaller or fewer" , "Abate, diminish" .)