One needs space to go round (5)
I believe the answer is:
orbit
'to go round' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for orbit that I've seen before include "Go round" , "Path of planet etc" , "Stellar path" , "Sphere of action" , "Satellite's path" .)