View or go through canal (8)
I believe the answer is:
panorama
'view' is the definition.
(I know that view can be written as panorama)
'or go through canal' is the wordplay.
'go through' is an insertion indicator.
'canal' becomes 'panama'.
'or' placed into 'panama' is 'PANORAMA'.
(Other definitions for panorama that I've seen before include "Total view (of subject)" , "Am on a par (anag)" , "A view that's wide" , "'Vista, view (8)'" , "Broad view (of BBC TV?)" .)