igloo: Meaning and Definition of

ig•loo

1. an Eskimo house, being a dome-shaped hut usually built of blocks of hard snow.
2. any dome-shaped construction thought to resemble an igloo: immense silos topped with steel igloos.
3. a dome-shaped building for the storage of rockets or other munitions.
4. an excavation made by a seal in the snow over its breathing hole in the ice.