Mutual will
Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
A will jointly executed by two or more persons making reciprocal testamentary provisions in favor of each other. See 136 Am. St. Rep. 593, note.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
See Testament.
Defined under Will in Black's Law Dictionary.