Webster’s Revised Unabridged Dictionary · 1913
Sonifer
Son′i·fer (sŏn′ĭ·fẽr), n. [NL. See Soniferous.] A kind of ear trumpet for the deaf, or the partially deaf.
Webster’s Revised Unabridged Dictionary · 1913
Son′i·fer (sŏn′ĭ·fẽr), n. [NL. See Soniferous.] A kind of ear trumpet for the deaf, or the partially deaf.