Definition of "whispering gallery" []

• See under Whispering. (noun)
• 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.

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)