Snow forts refers to structures or forts made out of snow, typically by children during winter. They are built by packing and shaping snow to create walls and a roof, providing a fun and imaginative playing space. Full definition
Relive your childhood by building snow forts as you prepare for epic snowball fights! (roadtovr.com)
With less than two months left in 2017, we're waiting (some more enthusiastically than others) for snow fort season to begin. (blog.blockchain.com)
From the book: «Every December since 1996, construction workers have used snow blowers to blast white flakes into huge molds, creating the world's largest snow fort.» (inc.com)