A "meetup group" refers to a gathering or community of people who come together to participate in activities or events based on shared interests, hobbies, or goals. Full definition
A social meetup group for owners and dogs to connect and form community evolved into a group of people who wanted to see change. (americanpetsalive.org)
Find out what's happening in hippie meetup groups around the world and start meeting up with the ones near you. (fsat.ru)