What is the meaning of Dement?

Demented.

To make (someone) demented; to drive mad].

To show signs of dementia; to develop dementia.

Someone afflicted with dementia.

demented

dement (person affected by dementia)

moron (personal insult implying stupidity)

senile, demented

demented

suffering from dementia

third-person plural future active indicative of dēmō

demented, suffering from dementia

demented, suffering from dementia

demented person

demented (suffering from dementia)

Source: wiktionary.org