indenture

(noun) a concave cut into a surface or edge (as in a coastline). Synonyms: indentation.

(noun) formal agreement between the issuer of bonds and the bondholders as to terms of the debt.

(noun) a contract binding one party into the service of another for a specified term.

(noun) the space left between the margin and the start of an indented line. Synonyms: indentation, indention, indent.

(verb) bind by or as if by indentures, as of an apprentice or servant. Synonyms: indent. Example: "An indentured servant."