PEBBLE
Pebble
A pebble is a clast of rock with a particle size of 2 to 64 millimetres based on the Krumbein phi scale of sedimentology. Pebbles are generally considered to be larger than granules and smaller than cobbles . 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.The above text is a snippet from Wikipedia: Pebble
and as such is available under the Creative Commons Attribution/Share-Alike License.
pebble
Noun
- A small stone, especially one rounded by the action of water.
- A particle from 4 to 64 mm in diameter, following the Wentworth scale
- A small droplet of water intentionally sprayed on the ice that cause irregularities on the surface.
- Transparent and colourless rock crystal.
- Brazilian pebble
Verb
The above text is a snippet from Wiktionary: pebble
and as such is available under the Creative Commons Attribution/Share-Alike License.