Heartless mum accepting kind help for farm worker (8)
I believe the answer is:
milkmaid
'farm worker' is the definition.
(milkmaid is a kind of farm worker)
'heartless mum accepting kind help' is the wordplay.
'heartless mum' becomes 'mm' (I can't explain this - if you can you should believe this answer much more).
'accepting' means one lot of letters goes inside another.
'kind' becomes 'ilk' (ilk is a kind of kind).
'help' becomes 'aid' ('aid' can be a synonym of 'help').
'mm' going around 'ilk' is 'milkm'.
'milkm'+'aid'='MILKMAID'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for milkmaid that I've seen before include "Traditional dairy farm worker" , "old farm worker" , "Udder-manipulating girl?" , "8th" , "Female in dairy" .)