Dotage is that feebleness of the mental faculties which proceeds from old age. It is a diminution or decay of that intellectual power which was once possessed. It is the slow approach of death; of that irrevocable cessation without hurt or disease ofall the functions which once belonged to the living animal. The external functions gradually cease; the senses waste away by degrees; and the mind is imperceptibly visited by decay.
DOTAGE
TheLaw.com Law Dictionary & Black's Law Dictionary 2nd Ed.