Boy’s day at Clare’s place (6)
I believe the answer is:
dennis
'boy's' is the definition.
(boy's name)
'day at clare's place' is the wordplay.
I cannot quite understand how this works, but
'day' could be 'd' (abbreviation for day) and 'd' is located in the answer.
'place' could be 'ennis' (I have seen 'place of Clare' mean 'ennis' so perhaps 'place' could also mean 'ennis') and 'ennis' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for dennis that I've seen before include "-- Potter, playwright" , "Man" , "___ the Menace (in comic)" , "- Wheatley, English novelist" , "-- Wheatley, English author" .)