A charming woman but a bad speller (5)

I believe the answer is:

witch

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'a charming woman' is the definition.

I don't understand how the rest of the clue works.

(Other definitions for witch that I've seen before include "strange woman" , "Broomstick riderof children's tales" , "Black cat and broomstick owner?" , "Female sorcerer" , "Cauldron-stirring hag" .)

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

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