stringcourse

A horizontal band or molding set in the face of a building as a design element.

In architecture, a narrow molding or a projecting course continued horizontally along the face of a building, frequently under windows. It is sometimes merely a flat band, more often molded, and sometimes richly carved.

A horizontal band in a building, forming a part of the design, whether molded, projecting, or carved, or in any way distinguished from the rest of the work.

A thin projecting course of brickwork or stone that runs horizontally around a building, typically to emphasize the junction between floors.