atriums

/EY1 T R IY0 AH0 M Z/
noun
  1. 1

    A central room or space in ancient Roman homes, open to the sky in the middle; a similar space in other buildings.

  2. 2

    A square hall lit by daylight from above, into which rooms open at one or more levels.

  3. 3

    A cavity, entrance, or passage.

  4. 4

    Any enclosed sexine and nexine layers, widening toward the interior of the grain.

Synonyms

Source: https://en.wiktionary.org/wiki/atrium, https://en.wiktionary.org/wiki/atriums