Definition

1. Noun:
   • A cutting tool for creating holes: A drill bit is the detachable, rotating cutting tool attached to the end of a drill. It is the part that actually bores into material (such as wood, metal, rock, or concrete) to create a cylindrical hole.
   • A tool for resource extraction: Specifically, a drill bit used in drilling for oil, gas, or water is a robust, specialized tool designed to cut through deep layers of rock and sediment.

Examples of Usage

• Noun:
  • I need to buy a new drill bit; the old one is too dull to make a clean hole in this metal.
  • The oil rig crew replaced the worn drill bit before continuing to bore deeper into the seabed.
  • For this project, you should use a masonry drill bit for the concrete wall.

Advanced Usage

• "to change/swapping out the drill bit": The action of replacing one drill bit with another, often to suit a different material or hole size.
  • The key to a professional finish is changing the drill bit for each material type.

Variants and Related Words

• Drill (noun/verb): The power tool or manual device that holds and spins the drill bit. As a verb, it means to bore a hole.
• Bit holder / Chuck: The part of the drill that grips and secures the drill bit.
• Core bit / Hole saw: Specialized types of drill bits designed for cutting larger diameter holes or removing a core of material.
• Auger bit: A drill bit with a screw tip, commonly used for drilling deep holes in wood.

Synonyms

• Boring tool: A general term for any tool used to make holes.
• Bit: In the context of drilling machinery, "bit" is often used as a shortened form of "drill bit."

Related Phrases

• Pilot hole: A small guide hole drilled before using a larger drill bit, often mentioned in the context of drill bit usage.
  • Always start with a pilot hole when using a large drill bit on hardwood.
• Drill bit size / gauge: Refers to the diameter of the hole a drill bit will create.
  • Check the drill bit size before you start; we need a 5mm hole.

Related Idioms

Noun

1. a bit used in drilling for oil