Boulder
In geology, a boulder is a rock fragment with size greater than 25.6 cm (10.1 in) in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are usually just called rocks or stones.
Read Full WikiDEFINITIONS
- nounA large mass of stone detached from the surrounding land.
- nounA particle greater than 256 mm in diameter, following the Wentworth scale
- verbTo engage in bouldering.
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Boulder Dam
