Randomly orbits edge in wasteland (4,6)
I believe the answer is:
gobi desert
'wasteland' is the definition.
(I have seen 'Mongolian wasteland ' mean 'gobi desert' so perhaps 'wasteland' could also mean 'gobi desert')
'randomly orbits edge' is the wordplay.
'randomly' indicates anagramming the letters (I've seen 'roaming randomly' mean this).
'orbits'+'edge'='orbitsedge'
'orbitsedge' with letters rearranged gives 'GOBI DESERT'.
'in' is the link.
(Other definitions for gobi desert that I've seen before include "Region of Central Asia" , "Arid Mongolian area" , "Mongolian wasteland" , "Asian wilderness" , "desolate landscape" .)