What is the term for bricks laid on edge across the wall with the ends showing to the face of the wall?

When bricks are laid on edge with the ends visible on the face of the wall, they are referred to as rowlocks. This technique is typically used to add strength to a wall or to create a decorative effect. Rowlocks stand out distinctly due to the orientation of the bricks, where the shorter side (the end) is what is exposed on the wall’s surface.

This method is often utilized in brickwork, particularly at the top of a wall or in features that require a change in the brick pattern. In contrast, headers are bricks laid flat across the width of the wall with the long side face showing, stuctural elements are often laid flat (like stretchers) in a linear pattern, and courses refer to the horizontal layers of bricks stacked upon each other in a wall. Hence, the designation of rowlocks for bricks laid on edge captures the specific profile and orientation that is being described in the question.