When I was growing up in Central PA, a weekend party which involved cooking various meats on a grill was/is called it a "cookout". Or sometimes we called it a "picnic" - event when there were no baskets or blankets involved.
Here in the city, many people refer to this kind of soiree as a "barbeque" - even if they aren't serving anything with any kind of barbeque sauce on it. This confuses me.
What do people where YOU'RE from call it??
.