Miss Duncan is taken over a bumpy road (7)

I believe the answer is:

isadora

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

'miss duncan' is the definition.
'isadora' can be an answer for 'duncan' (I've seen this in another clue). I'm unsure of the 'miss' bit.

'is taken over a bumpy road' is the wordplay.
'taken over' is an insertion indicator (some letters taken over or around others).
'bumpy' indicates anagramming the letters (letters get bumped around).
'road' with letters rearranged gives 'dora'.
'a' inserted into 'dora' is 'adora'.
'is'+'adora'='ISADORA'

Can you help me to learn more?

(Other definitions for isadora that I've seen before include "girl" , "Famous dancer" , "woman's name" , "-- Duncan, American dancer" , "- Duncan, twentieth century US dancer" .)

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

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