Yeah, Shuley, in the South, we refer to the evening meal as "supper." Mom would always tell me when I went out to play after school, "Be home in time for supper!" I have heard the mid-day meal called "dinner" before, but not very often; we called it lunch, like most places. In school, the cafeteria was often referred to as the "lunch room."
It's funny - we all speak the same basic language - English, but it's not universal and quite regional!