Dainty bird wings away, closer to geisha? (3)

I believe the answer is:

obi

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'dainty' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for obi that I've seen before include "West Indian witchcraft" , "Spells" , "Sash worn on Japanese kimono" , "Material band" , "magic" .)

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

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