a substance that is spread on the outside walls of a building, consisting of cement with many small stones mixed into it

The pebbledash on the house was starting to come loose and flake off in small patches. 房子的灰泥小石子外墙开始松动了，有几处小块地方掉了下来。

a row of suburban pebbledash houses 郊外一排灰泥小石子外墙的房屋