Going out of turn, Henry may make the long one (4)
I believe the answer is:
haul
'make the long one' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'going out of turn henry' is the wordplay.
I cannot really see how this works, but
'turn' could be 'u' (a 'U-turn' is a kind of turn) and 'u' is found within the answer.
'henry' could be 'hal' (short for Henry) and 'hal' is present in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'may' is the link.
Can you help me to learn more?
(Other definitions for haul that I've seen before include "Drag; transport in truck" , "Drag; loot" , "Pull forcibly; catch" , "Quantity stolen in a robbery" , "Drag; booty" .)