pebble

/ˈpɛb.əl/noun

A little stone, often one worn smooth and round by water.

Example sentence

“The children skipped pebbles across the surface of the lake.”

Geologists give it an exact size range between gravel and cobbles; everyone else just means a small smooth stone.

Related words

blossomTo produce flowers or come into bloom.shoreThe strip of land along the edge of a sea, lake, or other still body of water.foggyCovered in fog, or hazy and hard to see or think through clearly.cliffA steep, high face of rock that drops almost straight down.chillyUnpleasantly cold, in a way that makes you uncomfortable.swampAn area of soft, waterlogged ground, often wooded, that supports rich wildlife but is poor for farming.