whispering gallery is a noun meaning "a space beneath a dome or arch in which sounds produced at certain points are clearly audible at certain distant points". It carries one recorded sense.
a space beneath a dome or arch in which sounds produced at certain points are clearly audible at certain distant points
Definitions, synonyms and semantic relations for whispering gallery come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.