Senility
Defined in 4 dictionaries — Cyclopedic (1922), Ballentine's (1916), Bouvier (1914), Black's (1910)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
Old age; a state of mental impairment resulting from old age. See 2 Johns. Ch. (N. Y.) 232,
Ballentine's Law Dictionary
James A. Ballentine · 1916
The mental condition of an aged person.
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
The state of being old. When on account of senility the party is unable to manage his affairs, a committee will be appointed as in case of lunacy; 1 Collier, Lun. 66; In re Barker, 2 Johns. Ch. (N. Y.) 232; Darling v. Bennet, 8 Mass. 129;
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Incapacity to contract arising from the impairment of the intellectual facuities by old age.