Note obsessive passage (5)

I believe the answer is:

canal

'passage' is the definition.
(canal is a kind of passage)

'note obsessive' is the wordplay.
'note' becomes 'c' (musical note).
'obsessive' becomes 'anal' (I've seen this before).
'c'+'anal'='CANAL'

(Other definitions for canal that I've seen before include "Aqueduct" , "Man-made watercourse" , "Grand Union perhaps" , "Man-made channel of water" , "navigate this?" .)

I've seen this clue in The Guardian.

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