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single-flute countersink bit
1. A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.
2. A tool for making such a hole.
tr.v. coun·ter·sunk (-sŭngk′), coun·ter·sink·ing, coun·ter·sinks
1. To make a countersink on or in.
2. To drive (a screw or bolt) into a countersink.
vb (tr) , -sinks, -sinking, -sank or -sunk
1. (Building) to enlarge the upper part of (a hole) in timber, metal, etc, so that the head of a bolt or screw can be sunk below the surface
2. (Building) to drive (a screw) or sink (a bolt) into such an enlarged hole
3. (Building) Also called: countersink bit a tool for countersinking
4. (Building) a countersunk depression or hole
v. -sank, -sunk, -sink•ing,
1. to enlarge the upper part of (a hole) to receive the head of a screw or bolt.
2. to set the head of (a screw or bolt) flush with or below the surface.n.
3. a tool for countersinking a hole.
Past participle: countersunk
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|Noun||1.||countersink - 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|
hole - an opening deliberately made in or through something
|2.||countersink - a bit for enlarging the upper part of a hole|
bit - the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press; "he looked around for the right size bit"
|Verb||1.||countersink - insert (a nail or screw below the surface, as into a countersink)|