shadow block

shadow block

A concrete masonry unit whose face is shaped so as to elicit patterns of light and dark on its surface.
References in periodicals archive ?
Referring to Diagram IV, sew together 1 each half-blocks A and B to make Shadow Block.
While some regions received moderate showers, certain perennially rain shadow blocks still remain dry.
Lunar eclipses occur when the moon orbits behind the earth with respect to the sun, and the planet's shadow blocks light from the sun that would otherwise hit the moon.