The charm of the West Indies? (3)

I believe the answer is:

obi

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'the charm' is the definition.
(also obeah, type of sorcery)

'of the west indies?' is the wordplay.
'of' becomes 'o''.
'the west indies?' becomes 'bi' (I can't justify this - if you can you should believe this answer much more).
'o'+'bi'='OBI'

Can you help me to learn more?

(Other definitions for obi that I've seen before include "__-Wan Kenobi of "Star Wars" - kimono sash" , "Japanese band" , "Kimono sash; W. African sorcery" , "Garment" , "Long cloth" .)

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

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