Cestui que

Cestui que (/ˌsɛstwi ˈk/ SEST-wee KAY; also cestuy que, cestui a que) is a historical Law French term denoting beneficiary status in a trust.

Specifically, the term cestui que refers to any person or persons for whose benefit the trust is explicitly created. Unless restricted by the trust instrument, any such party is fully entitled to the equitable interests as outlined such as annual rents/produce/interest of the property forming the trust assets in question.

The term is no longer common in modern trusts law.