Definition

1. Verb:
   • To drill in an opposite direction: The action of drilling a hole or making a bore in a direction that is opposite to a previous or standard drilling direction. This is often done to correct an error, to create a specific alignment, or to perform a technical operation in manufacturing or construction.

Usage Examples

• Verb:
  • The machinist had to counter-drill the hole to align it properly with the other component.
  • If you drill at the wrong angle, you may need to counter-drill from the other side to fix the mistake.

Advanced Usage

• Technical/Manufacturing Context: The term is primarily used in technical fields such as machining, metalworking, carpentry, and engineering. It implies a corrective or precision-based action.
  • The blueprint specified to counter-drill the pilot hole to accommodate the screw head.

Variants and Related Words

• Counterbore (noun/verb): A related machining operation that enlarges a hole to a specific diameter for part of its depth, often to allow a screw or bolt head to sit flush. While similar, "counterbore" typically refers to enlarging an existing hole's diameter, whereas "counter-drill" emphasizes drilling in an opposite direction.
• Countersink (noun/verb): To cut a conical-shaped enlargement at the end of a hole for a screw or bolt. This is a different specific operation from counter-drilling.

Synonyms

• Redrill: To drill again, which may or may not be in an opposite direction.
• Reverse-drill: A less common, descriptive synonym for the action of drilling in the opposite direction.

Notes on Meaning

• The word "counter-drill" is a compound verb formed from "counter-" (meaning opposite or opposing) and "drill." Its meaning is highly specific to the action described and is not used in a general or figurative sense. It does not refer to a type of protest or military exercise, which might be inferred from the separate words "counter" and "drill."

Verb

1. drill in an opposite direction