Ring each of two about old kiosk (9)
I believe the answer is:
tollbooth
'kiosk' is the definition.
(I know that tollbooth is a type of kiosk)
'ring each of two about old' is the wordplay.
'ring' becomes 'toll' (ring a bell).
'each of two' becomes 'both' (I've seen this before).
'about' means one lot of letters goes inside another.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'both' going around 'o' is 'booth'.
'toll'+'booth'='TOLLBOOTH'
(Other definitions for tollbooth that I've seen before include "roadside kiosk" , "Kiosk for payments (to cross, eg, bridge)" .)