Definition

To create a conical hole in a material so that the head of a screw or bolt can sit flush with or below the surface.

Example

The carpenter decided to countersink the screws to ensure a smooth finish on the wooden surface.

Tense Forms

Conversation

Hey, do you know how to countersink screws properly?

Yeah, it’s pretty easy! You just need the right tools.

I want to make sure they sit flush with the surface.

Exactly, making a good countersink helps with that!

Synonyms & Antonyms

Root Explanation

Countersink → It is formed from "counter-" (meaning against or opposite) and "sink" (from Old English "sincan", meaning to cause to sink). The word describes a hole that is made to allow the head of a screw or bolt to sink below the surface, effectively creating an opposing or recessed area.

Memory Tip

Think of making a space that is 'against' the surface ('counter-') so that something can 'sink' down into it.

Visually Confused Words