Magical bit of bowling? (5)

I believe the answer is:

spell

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'magical bit' is the definition.
'spell' can be an answer for 'bit' (thesaurus). I am not certain of the 'magical' bit.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for spell that I've seen before include "get letters in order" , "Magic incantation" , "Words with magical power, or a period of time" , "Identify individual characters" , "Period; piece of magic" .)

I've seen this clue in the Evening Standard.

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