Bald headed individual a dog might go for (4)
I believe the answer is:
bone
'bald' is the definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I can't see?
'headed individual a dog might go for' is the wordplay.
I cannot really see how this works, but
'individual' could be 'one' (an individual is one person) and 'one' is found in the answer.
A single letter 'b' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for bone that I've seen before include "Skeleton substance" , "Eg, rib" , "#Close to it is risque" , "How dry" , "Ossified material" .)