Pronunciation: (ig'lOO),[key] —n., —pl.-loos. 1. an Eskimo house, being a dome-shaped hut usually built of blocks of hard snow.
2. Informal.any dome-shaped construction thought to resemble an igloo: immense silos topped with steel igloos. 3. Mil.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. Also,ig'lu.