No, a "meeting" is usually for business purposes. When I say "business", I mean that the meeting is to accomplish some business. For example, I currently volunteer with an educational society for seniors. We have regular meetings to accomplish society business. Meetings are usually called in order to proceed with some business or other. It entirely depends on what the gathering is and what its purpose is as to whether you can call it a meeting or not. A "gathering", for example, could be where a lot of people get together to raise money for a good cause. That's not a "meeting".