countersink

coun·ter·sink

transitive verb

-·sunk·, -·sink·ing

to enlarge the top part of (a hole in metal, wood, etc.) so that the head of a bolt, screw, etc. will fit flush with or below the surface
to sink the head of (a bolt, screw, etc.) into such a hole

a bit for countersinking holes
a countersunk hole

Link/Cite

Link to this page

Cite this page

MLA Style

"Countersink." YourDictionary. LoveToKnow. www.yourdictionary.com/Countersink.

APA Style

Countersink. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/Countersink

countersink

noun

A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.
A tool for making such a hole.

transitive verb

coun·ter·sunk, coun·ter·sink·ing, coun·ter·sinks

To make a countersink on or in.
To drive (a screw or bolt) into a countersink.

countersink

single-flute countersink bit

THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Link/Cite

Link to this page

Cite this page

MLA Style

"Countersink." YourDictionary. LoveToKnow. www.yourdictionary.com/Countersink.

APA Style

Countersink. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/Countersink

Noun

(plural countersinks)

a conical recess, typically machined around a hole to admit a screw so that it sits flush with a surface.

Verb

(third-person singular simple present countersinks, present participle countersinking, simple past countersank, past participle countersunk)

To create such a conical recess.
to countersink a hole for a screw
To cause to sink even with or below the surface.
to countersink a screw or bolt into woodwork

Origin

from counter + sink

English Wiktionary. Available under CC-BY-SA license.