D defs.my
Entry 2 senses Webster, 1913

monaural

/(mŏn*ôr"al)/ · mon·au·ral · IPA /ˌmɑˈnɔɹəl/
01 a. Having or hearing with only one ear.
  1. 1.
    Having or hearing with only one ear.
  2. 2.
    Same as monophonic{2}. See: monophonic