English to English
noun
- a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface
source: WordNet 3.0
- a bit for enlarging the upper part of a hole
source: WordNet 3.0
- An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt.
source: Webster 1913
verb
- insert (a nail or screw below the surface, as into a countersink)
source: WordNet 3.0
- To chamfer or form a depression around the top of (a hole in wood, metal, etc.) for the reception of the head of a screw or bolt below the surface, either wholly or in part; as, to countersink a hole for a screw.
source: Webster 1913
