shabbat - Why is it called Shalosh Seudos?

Why is the third Shabbos meal called Shalosh Seudos - literally three meals - would it not be more appropiate to call it Seuda Shlishis?

Answer

Often times in the winter when it is a short Shabbos afternoon it is difficult to eat Shalosh Seudos as people are still quiet full from the morning meal. However the Friday night meal and Shabbos morning meal people are hungry and have a appetite for them. Therefore when they eat Shalosh Seudos which is only being eaten in honor of Shabbos that shows that the first two Seudos were also in the honor of Shabbos. That is why it is called Shalosh Seudos. (Sefer Divrei Emes)