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 Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pin-hole

Historical Examples of pin-hole

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

Word Origin and History for pin-hole

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

Online Etymology Dictionary, © 2010 Douglas Harper