Bare American guy grabs gent, pinching coat (6)
I believe the answer is:
Here is my best explanation:
'bare' is the definition.
('denude' can be a synonym of 'bare')
'american guy grabs gent pinching coat' is the subsidiary indication.
'american guy' becomes 'dude'.
'grabs' indicates putting letters inside.
'pinching coat' says to take the centre.
The centre of 'gent' is 'en'.
'dude' enclosing 'en' is 'denude'.
(Other definitions for denude that I've seen before include "Dundee (anag.)", "Strip away cover, make bare", "Strip, deprive, of", "Make bare", "Put off covering", "Strip cover from, as leaves from trees", "Lay bare", "Clear so that nothing is left", "Uncover" and "Strip - expose".)