[ pin-hohl ]
See synonyms for pinhole on
  1. a small hole made by or as by a pin.

  2. 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 Unabridged Dictionary, © Random House, Inc. 2024

How to use pinhole in a sentence

  • 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
  • It essentially consists of a small lamp surrounded by an opaque chimney (A) through which a minute aperture (pin-hole) is made.

    On Laboratory Arts | Richard Threlfall
  • The background for the pin-hole should be the sky or other bright surface.

    Visual Illusions | Matthew Luckiesh
  • About mid-way along the front of the cell, he perceived a tiny orifice in the base of one bar—a mere pin-hole.

    The Onslaught from Rigel | Fletcher Pratt

British Dictionary definitions for pinhole


/ (ˈpɪnˌhəʊl) /

  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