The old part-time Himalayan Bigfoot (4)

I believe the answer is:

yeti

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'the old part-time himalayan bigfoot' is the definition.
'yeti' can be an answer for 'bigfoot' (I've seen this before). I'm not sure about the 'the old part-time himalayan' bit.

'the old part' is the wordplay.
'the old' becomes 'ye' (resembles a historical spelling of 'the').
'part' becomes 'ti' (ti is a kind of part).
'ye'+'ti'='YETI'

Can you help me to learn more?

(Other definitions for yeti that I've seen before include "Creature of disputed existence" , "Tibetan creature" , "imaginary beast?" , "hirsute specimen" , "Hairy creature of legend" .)

I've seen this clue in The Globe and Mail.

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