1. Any of the various submerged or partially submerged ridges, banks, or mounds of sand, gravel, or other unconsolidated sediment built up by waves or currents within stream channels, at estuary mouths, and along coasts.

2. Any band of hard rock, for example, a vein or dike, that extends across a lode.

A unit of pressure equal to 10⁵ pascals, or 10⁵ newtons per square meter, or 10⁶ dynes per square centimeter.

An elongated piece of metal of simple uniform cross- section dimensions, usually rectangular, circular, or hexagonal, produced by forging or hot rolling. Also known as barstock.

See <<bar drill>>