Edison possibly working for same goal (6)
I believe the answer is:
onside
'working for same goal' is the definition.
I can't tell whether this defines the answer.
'edison possibly' is the wordplay.
'possibly' indicates an anagram.
'edison' with letters rearranged gives 'ONSIDE'.
Can you help me to learn more?
(Other definitions for onside that I've seen before include "Working towards the same goal" , "Legally positioned at football etc" , "in position to proceed?" , "In agreement (colloq.)" , "in a permitted position in sport" .)