Poor clue about ballpoint in kiosk (7)
I believe the answer is:
cubicle
'kiosk' is the definition.
(synonyms)
'poor clue about ballpoint' is the wordplay.
'poor' indicates anagramming the letters.
'about' indicates putting letters inside.
'ballpoint' becomes 'bic' (I am not sure about this - if you are sure you should believe this answer much more).
'clue' anagrammed gives 'cule'.
'cule' placed around 'bic' is 'CUBICLE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for cubicle that I've seen before include "Partitioned-off part of room" , "Small partitioned-off area" , "Small, private compartment" , "Enclosed section of room" , "Booth - kiosk" .)