[′spad·ər ‚dash] (civil engineering) A finish put on stucco by dashing a mortar and sand mixture against it.Paint spattered on a different-colored ground coat.
spatter dash
1. A wet mixture of cement and sand, thrown on a smooth surface; when hard it provides a key for a plaster coat. 2. A finish produced by throwing a wet mixture of cement and sand on fresh mortar.