ear trumpet
noun
1.
a trumpet-shaped device held to the ear for collecting and intensifying sounds and once commonly used as an aid to hearing.
Origin
1770-80
Examples from the web for
ear trumpet
Though somewhat bulky in size, this
ear trumpet
was fairly effective in performance.
British Dictionary definitions for
ear trumpet
ear trumpet
noun
1.
a trumpet-shaped instrument that amplifies sounds and is held to the ear: an old form of hearing aid