Crossword Genius

Tours in France, say — plane came with parts around middle switched (5,4)

Ross

I believe the answer is:

place name

I'm a little stuck... Click here to teach me more about this clue!

'tours in france' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.

'plane came with parts around middle switched' is the wordplay.
'plane came' anagrams to 'PLACE NAME'.
However, I'm unsure how this is indicated.

'say' acts as a link.

Can you help me to learn more?

(Another definition for place name that I've seen is " Map identifier".)

I've seen this clue in The Guardian.
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