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sighthole

American

[sahyt-hohl] / ˈsaɪtˌhoʊl /

noun

a hole, as on a quadrant, through which to see or to sight.

Etymology

Origin of sighthole

First recorded in 1550–60; sight + hole

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.