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www.merriam-webster.com/dictionary/core%20barrel

Define core barrel: a tube inside a drill pipe and supported by a bit to receive the ... are looking for one that's only in the Merriam-Webster Unabridged Dictionary.

www.dictionary.com/browse/core-barrel

Core barrel definition, (in a core drill) a length of pipe for holding rock cores while they are being extracted from the drill hole. See more.

www.thefreedictionary.com/core

The central or innermost part: a rod with a hollow core; the hard elastic core of a ... ice, or other material obtained from the center of a mass by drilling or cutting.

encyclopedia2.thefreedictionary.com/Core+Drilling

Looking for Core Drilling? Find out information about Core Drilling. rotary drilling in which the rock is cut by an annular bit, with retention of the interior portion in ...

www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/calyx-drilling

calyx drilling Method of core drilling performed by the rotation of a steel cylinder and cutting with chilled shot, about 2.4 mm diameter, which cuts a formation core  ...

www.collinsdictionary.com/us/dictionary/english/coring

Coring entails taking core samples from the well and examining the presence of oil or gas.Coring involves drilling with a donut-shaped bit that allows a ...

www.collinsdictionary.com/dictionary/english/core-handling

Valid laboratory analysis of a core sample is dependent on the proper removal from the barrel and core handling at the drill site.Careless core handling can ...

www.wordreference.com/definition/core

core 1 /kɔr/USA pronunciation n., v., cored, cor•ing. n. [countable]. Botanythe central part of a fleshy fruit, containing the seeds:Remove the cores from the apples ...

en.oxforddictionaries.com/definition/core

Definition of core - the tough central part of various fruits, containing the seeds, the part of something that is central to its existence or characte.