Nuts cracked in shade (5)
I believe the answer is:
heads
'nuts' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Maybe you can see a link between them that I don't see?
'cracked in shade' is the wordplay.
'shade' can be anagrammed to 'HEADS'.
However, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for heads that I've seen before include "Goes for" , "Noddles; nuts" , "Ship's latrine; addicts" , "Leaders" , "School principals" .)