Damage in many nets, possibly (5)

I believe the answer is:
dents
'damage in many nets possibly' is the definition.
I can't tell whether this defines the answer.
'many nets possibly' is the wordplay.
'many' becomes 'd' (Roman numeral for 500).
'possibly' is an anagram indicator.
'nets' with letters rearranged gives 'ents'.
'd'+'ents'='DENTS'
Can you help me to learn more?
(Other definitions for dents that I've seen before include "Tends to create small depressions" , "Tends towards small depressions" , "Tends towards small depression" , "reductions in size" .)
