Definition

1. Noun:
   • A hollow drilling bit that is the cutting part of a core drill: A specialized cylindrical tool with a hollow center, designed to cut and extract a solid, cylindrical sample of material (the core) from the subsurface, leaving the surrounding material intact.

Usage

• The term "core bit" is used specifically in geology, mining, construction, and engineering to refer to the cutting head of a core drill. It is a technical term.
• It is typically used with verbs like "use," "attach," "replace," or "design."
• Example:

Examples

• Noun:
  • A worn core bit must be replaced to ensure clean core samples.
  • The choice of core bit (e.g., diamond, carbide) depends on the hardness of the rock being drilled.
  • The core bit's hollow design allows the core sample to pass up inside it.

Advanced Usage

• "to run a core bit": To operate a drill using a core bit.
  • They will run a core bit through the concrete slab to check its density.

Variants and Related Words

• Core drill (n): The complete drilling apparatus of which the core bit is the cutting component.
  • They transported the core drill to the survey site.
• Core sample (n): The cylindrical piece of material extracted by a core bit.
  • The core sample revealed layers of sedimentary rock.
• Core barrel (n): The assembly that holds the core bit and retains the core sample as it is cut.
  • The core barrel was retrieved to examine the extracted core.

Synonyms

• Core cutter: A less common synonym emphasizing the cutting function.
• Annular bit: A technical term highlighting the bit's ring-shaped, hollow design.

Related Phrases

• "to take a core" / "to core": To extract a core sample using a core bit.
  • The team needed to take a core from the glacier for climate research.
  • They will core the foundation to assess its integrity.

Noun

1. a hollow drilling bit that is the cutting part of a core drill; allows core samples to be taken