Give coppers, but not all day (3)
I believe the answer is:
pay
'give' is the definition.
(paying is a kind of giving)
'coppers but not all day' is the wordplay.
'coppers' becomes 'p'.
'but not all day' becomes 'ay' (I can't justify this - if you can you should believe this answer much more).
'p'+'ay'='PAY'
Can you help me to learn more?
(Other definitions for pay that I've seen before include "Hand over money for" , "Screw" , "Settle up" , "Remunerate" , "stop possible leaks on board" .)