Variation in spell, incoming ball on length, ending in wide (9)

I believe the answer is:

tolerance

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'variation' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for tolerance that I've seen before include "Allowance for dimensional inaccuracy" , "Indulgence" , "broad-mindedness" , "Understanding" , "Willingness to accept the beliefs of others" .)

I've seen this clue in The Hindu.

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