Around, about (5)
I believe the answer is:
circa
I believe this clue is a double definition.
'around' is the first definition.
(circa means around or approximately)
'about' is the second definition.
(I've seen this in another clue)
(Other definitions for circa that I've seen before include "Preposition meaning about, usually preceding a date" , "Approximately (Lat.)" , "More or less" , "Roughly" , "About (a time)" .)