Foot is to toe as inch is to chin? (7)

I believe the answer is:

tootsie

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

'is to toe as inch is to chin?' is the wordplay.
'is to toe' can be anagrammed to 'TOOTSIE'.
However, I am not clear how this is indicated.

Can you help me to learn more?

(Other definitions for tootsie that I've seen before include "Part of foot" , "pretty girl" , "What's furthest from a child's mind" , "Film with Dustin Hoffman" , "digit" .)

I've seen this clue in The Independent.

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