Definition of Fiduciary

Adjective: fiduciary fi'doo-shee,e-ree [N. Amer], fi'doo-shu-ree [Brit]

Relating to or of the nature of a legal trust (i.e. the holding of something in trust for another)
"a fiduciary contract"; "in a fiduciary capacity";
- fiducial

Noun: fiduciary fi'doo-shee,e-ree [N. Amer], fi'doo-shu-ree [Brit]

A person who holds assets in trust for a beneficiary
"it is illegal for a fiduciary to misappropriate money for personal gain"