One of ten capped? (3)

I believe the answer is:

toe

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'one of ten' is the definition.
(I've seen this in another clue)

I can't explain the remainder of the clue.

(Other definitions for toe that I've seen before include "'Little piggy'" , "One of the lower digits" , "compliantly put on line" , "Front of shoe" , "Feature of footwear" .)

I've seen this clue in the Evening Standard.

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