pebbler

plural pebblers

1. One who collects pebbles.

   This bay has long been the favourite resort of pebblers. The whole coast indeed, more particularly to the south, is strewed with onyxes, moss-agates, and cornelians.

   1815, Thomas Coultas, The Scarborough Guide, page 131

2. One who or that which applies a pebbled surface to something.

   The 'pebbler,' accompanied by a player carrying a bucket of warm water, walks backward down the rink, and swings the water-filled sprinkler over his head in a wide, rhythmic arc to throw the water uniformly across the ice, from side to side.

   1947, Frank Grant Menke, The New Encyclopedia of Sports, page 366

3. graph theoryOne who or that which places pebbles at the vertex of a graph, according to certain rules; see pebble game.