Cobble

Cobble is a geologic term for a rock or rock fragment with a grain size with dimensions between 64–256 mm (2.5–10 inch). Rounded cobble sized rocks are used as a construction material for road and street surfacing: see cobblestone.

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A cobble is also a shallow bottomed, low draught fishing boat.

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A coble is also a familiar term for the Hawfinch.

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Geologic: redirect geology...

Rock: Rock may refer to:...

Grain size: :This article deals with grain size in the context of geology, see crystallite for grain size in materials science....