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pinhole

[pin-hohl] /ˈpɪnˌhoʊl/
noun
1.
a small hole made by or as by a pin.
2.
a hole for a pin to go through; tiny aperture.
Origin
1670-1680
1670-80; pin + hole
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for pinhole
  • Chameleons' eyelids are fused together, leaving only a pinhole open over the pupil.
  • The set linked to above also has a pinhole attachment that fixes the aperture, forcing you to adjust shutter speed to compensate.
  • Light that does not go in exactly the right direction does not make it through the pinhole, and so cannot blur the image you see.
  • If x-ray beam is up, scan pinhole to center the pinhole with x-ray.
British Dictionary definitions for pinhole

pinhole

/ˈpɪnˌhəʊl/
noun
1.
a small hole made with or as if with a pin
2.
(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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