Crossword Genius

Visiting many places in Canadian province for us (2,4)

Ross

I believe the answer is:

on tour

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'visiting many places in' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.

'canadian province for us' is the wordplay.
'canadian province' becomes 'ont' (I am not sure about this - if you are sure you should believe this answer much more).
'for us' becomes 'our' ('our' means belonging to us).
'ont'+'our'='ON TOUR'

Can you help me to learn more?

(Other definitions for on tour that I've seen before include "Doing a round of performances (of actor, band etc)" , "No rout (anag.)" , "Travelling about" , "Going from place to place" .)

I've seen this clue in The Guardian.
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