Definition of big kahuna in English:

big kahuna

(also big kahoona)

noun

  • 1In Hawaii: a prominent priest, sage, or healer. Compare "kahuna". rare.

  • 2Surfing. (A name for) a particularly skilled or respected surfer.

  • 3A person or thing of great importance or power.

Origin

Late 19th century; earliest use found in Leprosy in Hawaii. From big + kahuna.

Pronunciation

big kahuna

/ˌbɪɡ kəˈhuːnə/