Accuse one in front of policeman and every one (7)
I believe the answer is:
impeach
'accuse' is the definition.
('impeach' can be a synonym of 'accuse')
'one in front of policeman and every one' is the wordplay.
'front of' says to take the initial letters.
'policeman' becomes 'mp' (abbreviation for Military Policeman).
'and' means one lot of letters go next to another.
'every one' becomes 'each' (I've seen this before).
The first letter of 'in' is 'i'.
'i'+'mp'+'each'='IMPEACH'
(Other definitions for impeach that I've seen before include "Bring a charge against" , "Bring an accusation against" , "Charge public official with misconduct - Clinton?" , "Charge with major crime" , "call into question" .)