big kahuna
A boss, leader, chieftain, or top-ranking person in an organization.
You'll have to talk with the big kahuna to get a decision on that.
kahuna
/kəˈhuːnə/
noun 2
Definitions
noun
1
A priest or priestess of the traditional Hawaiian religion.
They were kāhuna, practitioners of the old Hawaiian religion, apparently offering themselves as sacrifices to appease the gods so that the queen would be restored.
2
A great surfer.
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