Meaning of countersink
Pronunciation: (v., n.koun'tur-singk"v.also koun"tur-singk'), [key]
— v., n. -sank, -sunk, -sink•ing,
- to enlarge the upper part of (a cavity), esp. by chamfering, to receive the cone-shaped head of a screw, bolt, etc.
- to cause (the head of a screw, bolt, etc.) to sink into a prepared depression so as to be flush with or below the surface.
- a tool for countersinking a hole.
- a countersunk hole.
- countersink (Thesaurus)