Right to be placed at noon (4)
I believe the answer is:
lien
'right' is the definition.
(legal right)
'be placed at noon' is the wordplay.
I cannot quite see how this works, but
'be' could be 'lie' (lying is a kind of being) and 'lie' is located in the answer.
'noon' could be 'n' (abbreviation for noon) and 'n' is located in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for lien that I've seen before include "Legal right over the Nile" , "Legal claim on the property of another" , "Right to another's property, if an obligation is not discharged" , "The right to take property if an obligation is not discharged" , "Sequestration order" .)