rock bolt
noun Mining, Civil Engineering.
a steel or fiberglass bolt inserted and anchored in a hole drilled in rock to prevent caving of the roof of a tunnel or subterranean chamber.
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Nearby words
rock and rye, rock barnacle, rock bass, rock beauty, rock blenny, rock bolt, rock boot, rock borer, rock bottom, rock brake, rock cake
Origin of rock bolt
First recorded in 1955–60
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019