Indenture refers to a legal and binding agreement, contract, or document between two or more parties. Indentured servitude encompassed a number of conditions that legally bound an individual, voluntarily or involuntarily, to serve a master for term of years.THIS INDENTURE OF TRUST, made and dated as of the first day of April,. An indenture agreement is a legally binding document or contract that establishes terms and conditions between two or more parties.