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[pin-hohl] /ˈpɪnˌhoʊl/
a small hole made by or as by a pin.
a hole for a pin to go through; tiny aperture.
Origin of pinhole
First recorded in 1670-80; pin + hole Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for pin-hole
Historical Examples
  • To sew a button on securely you should make a pin-hole where the button is to be placed.

  • The background for the pin-hole should be the sky or other bright surface.

    Visual Illusions Matthew Luckiesh
  • This is best done through a filter perforated at its apex by a pin-hole.

    A Practical Physiology Albert F. Blaisdell
  • The existence of the pin-hole pupil is also a contraindication to its employment.

  • A pin-hole Camera is another extremely simple yet extraordinarily interesting contrivance (Fig. 100).

    Toy-Making at Home

    Morley Adams
  • Look through a pin-hole in a card at a uniform white surface as the white shade of an ordinary reading-lamp.

    A Practical Physiology Albert F. Blaisdell
  • With the right eye look through the pin-hole, the left eye being closed.

    A Practical Physiology Albert F. Blaisdell
  • The pin-hole got larger—blue lights lay along the sides of the tunnel.

  • The pin-hole camera is simply a light-tight box with a small aperture in one side.

    Physics Willis Eugene Tower
  • A small lens may be used, of very great curvature, or even a transparent marble to throw an image of the flame on the pin-hole.

    On Laboratory Arts Richard Threlfall
British Dictionary definitions for pin-hole


a small hole made with or as if with a pin
(archery) the exact centre of an archery target, in the middle of the gold zone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for pin-hole

1670s, from pin (n.) + hole (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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