Oriental pattern of cricket bat? (6)

I believe the answer is:

willow

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

I cannot understand how the remainder of the clue works.

(Other definitions for willow that I've seen before include "Quick-growing tree with flexible branches" , "See 22" , "Fast-growing tree" , "It produces osiers" , "Sally tree" .)

I've seen this clue in the Evening Standard.

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