D defs.my
Entry 3 senses · 3 variants Webster, 1913

Mental

/mĕn'-təl/ · Men·tal · IPA /ˈmɛn.təl/
01 a. Of or pertaining to the chin; genian; as, the mental nerve; the mental region.
  1. 1.
    Of or pertaining to the chin; genian; as, the mental nerve; the mental region.(Anat.)
02 n. A plate or scale covering the mentum or chin of a fish or reptile.
  1. 1.
    A plate or scale covering the mentum or chin of a fish or reptile.(Zool.)
03 a. Of or pertaining to the mind; intellectual; as, mental faculties; mental operations, conditions, or exercise.
  1. 1.
    Of or pertaining to the mind; intellectual; as, mental faculties; mental operations, conditions, or exercise.
    “What a mental power This eye shoots forth!” Shak.
Phrases & compounds
Mental alienation — insanity.
Mental arithmetic — the art or practice of solving arithmetical problems by mental processes, unassisted by written figures.