meetup

or meet-up

[ meet-uhp ]
/ ˈmitˌʌp /

noun

a meeting, especially a regular meeting of people who share a particular interest and have connected with each other through a social-networking website: a meetup for new moms in the neighborhood; a meetup to plan the trip.

Origin of meetup

2000-05; meet1 + up, popularized by Meetup, name of a website