AskDefine | Define pebble

Dictionary Definition

pebble n : a small smooth rounded rock

User Contributed Dictionary




  1. A small stone
  2. A rock fragment between 4 and 64 millimetres in diameter (especially a naturally rounded one)
  3. A small droplet of water intentionally sprayed on the ice that cause irregularities on the surface.



  1. To pave with pebbles.
  2. To deposit water droplets on the ice. e.g. to pebble the ice between games.


To pave with pebbles
To deposit water droplets on the ice

Extensive Definition

A pebble is a clast of rock with a particle size of 4 to 64 millimeters based on the Krumbein phi scale of sedimentology. It is generally described to be larger than gravel and smaller than cobble. A rock made predominantly of pebbles is termed a conglomerate. Pebble tools are among the earliest known man-made artifacts, dating from the Palaeolithic period of human history. They have been found at Olduvai Gorge (1.85 million years ago) and at Longuopo in China (1.8 to 1.5 MYA).
A beach composed chiefly of surface pebbles is commonly termed a shingle beach, which has armoring characteristics with respect to wave erosion; moreover, this type of beach has unusual ecological niches that may provide habitat for a number of rare and endangered species.

See also

pebble in Danish: Ral (geologi)
pebble in German: Kieselstein
pebble in Estonian: Veeris
pebble in French: Galet
pebble in Dutch: Grind
pebble in Norwegian: Rullestein
pebble in Polish: Otoczak (geologia)
pebble in Portuguese: Seixo (rocha)
pebble in Russian: Галька
pebble in Swedish: Klapperstenar

Synonyms, Antonyms and Related Words

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