1.Definition: affected by a disorder of the mind
"A mental patient", "Mental illness"
2.Definition: involving the mind or an intellectual process
"Mental images of happy times", "Mental calculations", "In a terrible mental state", "Mental suffering", "Free from mental defects"
3.Definition: of or relating to the chin or median part of the lower jaw
4.Definition: of or relating to the chin- or liplike structure in insects and certain mollusks
5.Definition: of or relating to the mind
"Mental powers", "Mental development", "Mental hygiene"