Cestui Que Trust
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
He for whose benefit another person is seized of lands or tenements, or is possessed of personal property. He who has a right to a beneficial interest in and out of an estate the legal title to which is vested in another.
2 Washb. Real Prop. 163.
Judge Story suggests (1 Eq. Jur. § 321) that the word "beneficiary" be substituted for cestui que trust, and this term has come into very general use as such a substitute.