Millions robbed in business by force (6)
I believe the answer is:
coerce
'force' is the definition.
(synonyms)
'millions robbed in business' is the wordplay.
I cannot quite understand how this works, but
'business' could be 'co' and 'co' is present in the answer.
This explanation may well be incorrect...
'by' acts as a link.
Can you help me to learn more?
(Other definitions for coerce that I've seen before include "Persuade (the unwilling) by force" , "Persuade using threats" , "Forcibly compel" , "Railroad" , "Oblige by force" .)