pilot hole

See also: pilot-hole

English

pilot hole (plural pilot holes)

A narrow hole drilled or punched into a surface, to facilitate the insertion of a wider screw, nail, drill bit, or other boring tool.
- 1908, W. McKay, "The Boultham Well at Lincoln," Transactions of the Manchester Geological and Mining Society, vol. 30, p. 29,
  During the sinking of the last 150 feet, a pilot-hole was kept in advance, so as to prevent any unforeseen inrush of water.
- 1970, Andy Lang, "Right Nail Hits the Spot," St Petersburg Times, 25 Oct., p. 5-G (retrieved 7 Dec. 2008),
  Nothing prevents splitting the wood as much as first driving a pilot hole, especially for hard wood.

单词	pilot hole
释义	pilot hole See also: pilot-hole English Alternative forms pilot-hole Noun pilot hole (plural pilot holes) A narrow hole drilled or punched into a surface, to facilitate the insertion of a wider screw, nail, drill bit, or other boring tool. 1908, W. McKay, "The Boultham Well at Lincoln," Transactions of the Manchester Geological and Mining Society, vol. 30, p. 29, During the sinking of the last 150 feet, a pilot-hole was kept in advance, so as to prevent any unforeseen inrush of water. 1970, Andy Lang, "Right Nail Hits the Spot," St Petersburg Times, 25 Oct., p. 5-G (retrieved 7 Dec. 2008), Nothing prevents splitting the wood as much as first driving a pilot hole, especially for hard wood.
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