pebble dash

noun
1.
an exterior wall finish composed of mortar against which, while still wet, small pebbles have been thrown and pressed in.
Compare roughcast.
Origin
1900-05
Related forms
pebble-dash, pebble-dashed, adjective
British Dictionary definitions for pebble dash

pebble dash

noun
1.
(Brit) a finish for external walls consisting of small stones embedded in plaster