Pitched battles over marked stones (7)
I believe the answer is:
tablets
'marked stones' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Maybe there's a link between them I don't understand?
'pitched battles' is the wordplay.
'battles' anagrams to 'TABLETS'.
However, I am unsure how this is indicated.
'over' acts as a link.
Can you help me to learn more?
(Other definitions for tablets that I've seen before include "Battles (anag.)" , "Pellets of medicine" , "Pills" .)