club for enthusiasts; society of devotees
Refers to a club or association formed by people who share a strong interest in a particular subject, hobby, or activity. Often used in names of hobbyist groups.
He belongs to a local photography club.
This enthusiast group meets on the first Saturday of every month.
Compound of 愛好 (aikō, 'love, devotion') and 会 (kai, 'meeting, society').