Saint of the dance? (5)

I believe the answer is:

vitus

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'saint' is the definition.
(I know that Vitus is a saint)

I don't understand the rest of the clue.

(Other definitions for vitus that I've seen before include "Saint giving name to "dance"" , "Saint whose dance is a disease" , "Saint (with a pathological dance)" .)

I've seen this clue in the Evening Standard.

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