What are entrees?

In general use in the U.S., it simply means the main course. Technically, though, is classic, formal dining (and mostly in the UK), it was an intermediate course the preceeded the main course and...

An entree is the main dish for any meal, so for breakfast it could be eggs, pancakes, waffles, and anything that is the main part of the meal.

NO!its not a freaking entree retards.its a desert.i eat it frozen every Tuesday nightlike a popsicle!on a stick(:

No

Because "entree" is a noun, and as such takes an article. So we say "an entree", in the same way that we say "a starter" or "a main course", and so on.