Definition

Noun: A type of drill bit designed with a cutting blade or blades that can be adjusted or expanded to create holes of varying diameters. It is a tool used for boring holes that are larger than the bit's starting size.

Usage

This term is used specifically in the context of tools, woodworking, metalworking, and construction. It describes a functional piece of equipment, not an abstract concept. - The carpenter used an expansive bit to bore a hole for the new door lock. - For this project, you'll need an expansive bit because we have to drill several holes of different sizes.

Advanced Usage

• Technical Specification: Often discussed in terms of its adjustment range (e.g., "an expansive bit adjustable from 1 to 3 inches").
  • Check the specifications to see the maximum bore diameter of this expansive bit.

Variants and Related Words

• Expansive: (Adjective) Covering a wide area; extensive, or friendly and communicative. (Note: This is the adjective form and is not a tool).
• Adjustable Bit: A more general term that may include expansive bits and other bits with size-adjustment features.
• Forstner Bit: A related type of drill bit for drilling flat-bottomed holes, but it is not typically adjustable in the same way.
• Spade Bit: A flat drill bit; some models may have adjustable features, but it is a different design.

Synonyms

• Adjustable drill bit
• Expanding bit

Related Phrases

• To fit an expansive bit: To install or attach the bit to a drill.
  • Make sure you fit the expansive bit securely into the drill chuck.
• To adjust/set the expansive bit: To change the cutting diameter of the bit.
  • You must adjust the expansive bit to the exact measurement before you start drilling.

Noun

1. a bit with a cutting blade that can be adjusted to different sizes