Pebble

Pebble

A pebble is a clast of rock with a particle size of 4–64 mm (0.16–2.52 in) based on the Udden-Wentworth scale of sedimentology. Pebbles are generally considered larger than granules and smaller than cobbles. Pebble tools are among the earliest known man-made artifacts, dating from the Palaeolithic period of human history.

Pebble (watch)

Pebble is a series of smartwatches sold by Pebble Technology Corporation of Palo Alto, California from 2013 until 2016, and by Core Devices since 2025. Created by Eric Migicovsky, Pebble was initially funded through a Kickstarter campaign in 2012, and was the most funded project in Kickstarter's history at the time. Pebble smartwatches are notable for their e-paper displays, which display the time using stylized digital watch faces, and display messages and notifications from connected Android and iOS devices. They are also capable of running downloadable apps, which are used for a wide variety of functions.

pebble

Noun

1. A small stone, especially one rounded by the action of water.
2. A particle from 4 to 64 mm in diameter, following the Wentworth scale.

Verb

1. To pave with pebbles.
2. To deposit water droplets on the ice.