How the boss speaks in the cemetery (10)
I believe the answer is:
headstones
'speaks in the cemetery' is the definition.
I can't judge whether this defines the answer.
'how the boss' is the wordplay.
I cannot really understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
'boss' could be 'head' (synonyms) and 'head' is found within the answer.
The remaining letters 'sones' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for headstones that I've seen before include "they're put up at the end of the road" , "grave things" .)