verb (used with object), coun·ter·sank, coun·ter·sunk, coun·ter·sink·ing.
Origin of countersink
Related Words for countersinkauger, punch, implement, bit, gimlet, trephine, trepan, borer, riveter, awl, wimble, corkscrew, jackhammer, dibble, countersink
Examples from the Web for countersink
Historical Examples of countersink
Countersink this hole enough to allow the head to sink flush with the surface.Handwork in Wood
Bore all holes, where shown in the drawing, and countersink them.
Countersink the holes on the side from which the screws enter.
Countersink all holes, except the four holes which hold the supports for the cart handle.
Countersink the hole in the base on the under side with a 1/2-in.The Boy Mechanic, Book 2