Rice ball
A rice ball (Japanese: 御握り, おにぎり onigiri) is a common Asian snack that appears in the Pokémon anime many times and, in the dub, under a variety of different names. Brock makes them fairly often and they are frequently used in gags.
To give the snack a name which American children would be more familiar with, the dub has referred to them as such things as sandwiches, jelly donuts and popcorn balls. In a couple of Hoenn League episodes, the Template:4Kids dub replaced giant rice balls with large sandwiches, which was not received well by the fanbase. Since Pokémon USA started dubbing the series, they have been consistently referred to as rice balls.
Glalie bears a resemblance to these snacks, and its Japanese name even sounds similar to the word onigiri. In all actuality, Glalie could be described as an ice ball, one letter off.