Not surprisingly, it goes right around (5)
I believe the answer is:
girth
'not surprisingly it' is the definition.
I can't judge whether this defines the answer.
'right around' is the wordplay.
'around' indicates anagramming the letters.
'right' with letters rearranged gives 'GIRTH'.
'goes' is the link.
Can you help me to learn more?
(Other definitions for girth that I've seen before include "Distance around, often of the tummy" , "Perimeter" , "Circumpherence" , "A band passing under horse's belly" , "Right (anag.)" .)