Describes a surface covered with pebbles.
El camino era guijarroso, lo que complicaba el viaje en bicicleta para todos.
The path was pebbly, which complicated the bike ride for everyone.
La playa tenía un terreno guijarroso, lo que dificultaba caminar descalzo.
The beach had a pebbly terrain, which made it difficult to walk barefoot.