Um...indeed the definition you gave is true to the nature of perogies, they're dumplings a.k.a. "stuffed grain-flour pockets" that can be stuffed with anything that can survive frying, baking or boiling.
Great with coleslaw.
Perogi Afficiando: Oh, I've got my own.
Me: Wow...we can have a perogi party, do you have a pretty daughter?