From Longman Business Dictionarydeed of trustˌdeed of ˈtrust noun (plural deeds of trust) [countable]LAWPROPERTYFINANCE in the US, a change of ownership of a property to a TRUSTEE as SECURITY in case the owner of the property fails to do something such as repay a loanA notary forged deeds of trust against people’s houses and got away with $1.8 million.