Roundabout charge that’s round about (8)
I believe the answer is:
indirect
'roundabout' is the definition.
(similar in meaning)
'charge that's round about' is the wordplay.
'charge' becomes 'indict' (indicting is a kind of charging).
'that's round' means one lot of letters goes inside another.
'about' becomes 're' (regarding).
'indict' going around 're' is 'INDIRECT'.
(Other definitions for indirect that I've seen before include "Not following the shortest way" , "(Of tax) levied on goods rather than income" , "Roundabout (route)" , "Round about" , "In credit, not being straight" .)