Quite dubious, displaying a Hawaiian gesture (5)
I believe the answer is:
shaka
'gesture' is the definition.
Both the definition and answer are singular nouns.
Perhaps you can see an association between them that I don't see?
I don't understand how the rest of the clue works.
Can you help me to learn more?
I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution?
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