Definitions:

1. A Hawaiian shaman. NOUN
   • The wise Kahuna performed an ancient ceremony to invoke the spirits.
2. In Native Hawaiian culture, refers to a priest, healer, or expert who possesses specialized knowledge or spiritual authority. NOUN
   • The village relied on the Kahuna for guidance in spiritual and medicinal matters.
3. Informally used to describe someone who is an expert or leader in their field, especially in surfing. NOUN
   • He's the big Kahuna of the surfing community.
4. Refers to an influential or respected surfer. NOUN
   • Everyone looked up to the old surfer, who was known as the local Kahuna.

Synonyms:

• bigwig
• guru
• honcho
• kingpin
• mogul
• personality
• star
• very important person