Bucket gives Penny trouble (4)
I believe the answer is:
Here is my best explanation:
'bucket' is the definition.
('pail' can be a synonym of 'bucket')
'penny trouble' is the wordplay.
'penny' becomes 'p'.
'trouble' becomes 'ail' ('ail' can be a synonym of 'trouble'**).
'gives' is the link.
(Other definitions for pail that I've seen before include "Kind of bucket - ask Jack and Jill", "it may go down well", "Cylindrical vessel", "Container; sounds like dim", "A bucket - the kind Jack and Jill used", "Open-topped container", "Bucket for Jack and Jill", "water-carrier", "Vessel for carrying liquids" and "A bucket as for water".)