What is "whispering dome"

Whispering \Whis"per*ing\, a. & n. from Whisper. v. t.

Whispering gallery, or Whispering dome, one of such a form that sounds produced in certain parts of it are concentrated by reflection from the walls to another part, so that whispers or feeble sounds are audible at a much greater distance than under ordinary circumstances. The dome of the U. S. capitol building is one example.

n. a space beneath a dome or arch in which sounds produced at certain points are clearly audible at certain distant points [syn: whispering gallery]