Nevertheless, junction is an idea (7)

I believe the answer is:

thought

'is an idea' is the definition.
(I've seen this before)

'nevertheless junction' is the wordplay.
'nevertheless' becomes 'though' (I've seen this before).
'junction' becomes 't'.
'though'+'t'='THOUGHT'

(Other definitions for thought that I've seen before include "Orwell's sort of police" , "Pensee; consideration" , "Supposed" , "Mental idea" , "Performed brain operations" .)

I've seen this clue in The Daily Express.

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