Dictionary.com
Thesaurus.com

vamphorn

American  
[vamp-hawrn] / ˈvæmpˌhɔrn /

noun

  1. a megaphone in use during the 18th and early 19th centuries for public address in church services.


Etymology

Origin of vamphorn

vamp 1 + horn; so called from its use in amplifying one voice as an accompaniment in choral singing