Dictionary Home »
Dictionary Definitions » countersink
countersink
transitive verb countersunk, countersinking
- 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
noun
- a bit for countersinking holes
- a countersunk hole
See countersink in American Heritage Dictionary 4
Learn more about countersink
