1

countersink

play
verb coun·ter·sink \ˈkau̇n-tər-ˌsiŋk\

Definition of countersink

countersunk

play \ˈkau̇n-tər-ˌsəŋk\;

countersinking

  1. transitive verb
  2. 1 :  to make a countersink on (a hole)

  3. 2 :  to set the head of (something, such as a screw) at or below the surface

First Known Use of countersink

1816


2

countersink

noun coun·ter·sink

Definition of countersink

  1. 1 :  a bit or drill for making a funnel-shaped enlargement at the outer end of a drilled hole

  2. 2 :  the enlargement made by a countersink

Illustration of countersink

First Known Use of countersink

1816

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