Wander about to obtain device (6)
I believe the answer is:
gadget
'device' is the definition.
(gadget is a kind of device)
'wander about to obtain' is the wordplay.
'wander about' becomes 'gad' (I've seen this in another clue).
'to obtain' becomes 'get' (synonyms).
'gad'+'get'='GADGET'
(Other definitions for gadget that I've seen before include "appliance" , "Thing made or used for particular purpose" , "Ingenious little device" , "Clever device" , "Small mechanical device or tool" .)