COUNTERSINK • FREE TRANSLATOR.ORG • Definition of Countersink

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verb

Countersink v. t. (past countersank; past part. countersunk; pres. part. countersinking)

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.

To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork.

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Etymology of 'Countersink'

Collaborative International Dictionary of English 0.48

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"Countersink" Quotes from Famous Books

... to use brass screws around electrical apparatus. For the small work, for binding-posts, etc., use 5/8 No. 5. Another handy size is No. 7, from 3/4 to 1-1/4 in. long. The round-headed screws are best, unless you want to countersink them. ...

— How Two Boys Made Their Own Electrical Apparatus • Thomas M. (Thomas Matthew) St. John

Words linked to "Countersink" : set, hole, countersink bit, bury, sink