New order ran greater men ragged (13)
I believe the answer is:
rearrangement
'new order' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'ran greater men ragged' is the wordplay.
'ragged' indicates anagramming the letters.
'ran'+'greater'+'men'='rangreatermen'
'rangreatermen' anagrammed gives 'REARRANGEMENT'.
Can you help me to learn more?
(Other definitions for rearrangement that I've seen before include "A new ordering" , "Moving around of component parts" , "Act of moving things around" , "Act of changing layout of items" , "Process of moving things around" .)