Is it farther or further?
the most important person; a chief
Ask the big kahuna if it is all right to leave.
An authoritative person; the chief; big enchilada, honcho: Take the word ''interim'' out of Al Fisher's job description and insert ''big kahuna''
[1950s+; fr Hawaiian kahuna, ''shaman, medicine man, priest''; the term was apparently disseminated by surfers]