Meaning of the word arcane in English

What does arcane mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

arcane

US /ɑːrˈkeɪn/
UK /ɑːˈkeɪn/

Adjective

understood by few; mysterious or secret

Example:
The professor's lecture was full of arcane references that only a few specialists understood.
He was initiated into the arcane rituals of the ancient society.