Apocryphal luxury involving a big toe (6)

I believe the answer is:

hallux

I'm a little stuck... Click here to teach me more about this clue!

'toe' is the definition.
(I know that hallux is a type of toe)

'apocryphal luxury involving' is the wordplay.
'involving' says the answer is hidden in the clue (I've seen 'involves' mean this).
'HALLUX' can be found hidden inside 'apocryphal luxury'.

'a big' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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