mansion

noun

1. Archaic a manor house
2. a large, imposing house; stately residence
3. Archaic: usually used in pl.
   1. a dwelling place
   2. a separate dwelling place or lodging in a large house or structure
4. Brit. an apartment house
5. Obsolete a stay; sojourn
6. Astrol.
   1. house ()
   2. any of the 28 parts of the moon's course occupied on successive days