Member of Parliament exposed in a despicable manner (3)
I believe the answer is:
owl
'member of parliament' is the definition.
('parliament' is the collective noun for 'owl')
'exposed in a despicable manner' is the wordplay.
'exposed' says to take the centre (outside letters removed).
'in a despicable manner' becomes 'lowly' (in a low or immoral way).
The centre of 'lowly' is 'OWL'.
(Other definitions for owl that I've seen before include "Nocturnal bird of prey" , "Athena's bird" , "You'll need hooter" , "Low kind of wise bird" , "Wise person" .)