special interest group

noun
UK /ˌspɛʃəl ˈɪntrəst ɡruːp/
US /ˌspɛʃəl ˈɪntrəst ɡruːp/

A special interest group is a small club of people who care a lot about one topic and work together to help it.

The bird-watching special interest group meets every Saturday to share photos.


OTHER MEANINGS

2. A group within a larger organization that focuses on one shared topic.

The science special interest group within the club planned a field trip.

3. A group of people who try to influence leaders about one issue.

The clean-rivers special interest group spoke at the town meeting.

4. A club for people who share a hobby or goal.

She joined a coding special interest group to learn with friends.