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1.
A sluncher is something that you eat too late to be a lunch, too soon to be a dinner and too large to be a snack. A sluncher is the single meal you have in a day, neither at lunch nor dinner time.

Similarly as a brunch is a breakfast + lunch, a sluncher is considered a snack + lunch + dinner.
I had a sluncher = I didn't have lunch nor dinner but instead I ate a complete meal at a time in between the two.
by Pola and Tom October 07, 2007