A city in manga/TV series called Attack on Titan (Shingeki no Kyojin) in which a major battle is fought in 845. There were 800 injured and 207 missing or dead in the combined forces of the Cadet Corps and Garrison.
Usually refers to one or two persons outside in the extreme cold playing "the Ice Game." When one person cannot take it anymore the winner of the competition calls them a "Frosty Trost" to declare their win in the ice game.