Crossword Genius

An opening act or passage (7)

Ross

I believe the answer is:

doorway

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

'act or passage' is the wordplay.
'act' becomes 'do' (to do is to act or execute a task).
'passage' becomes 'way' (I've seen this in another clue).
'do'+'or'+'way'='DOORWAY'

(Other definitions for doorway that I've seen before include "Room access, threshold" , "Entrance to a room" , "Opening" , "Threshold, portal" .)

I've seen this clue in The Globe and Mail.
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