backsight

[ bak-sahyt ]
/ ˈbækˌsaɪt /

noun Surveying.

a sight on a previously occupied instrument station.
(in leveling) the reading on a rod that is held on a point of known elevation, used in computing the elevation of the instrument.

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earnest

Origin of backsight

First recorded in 1840–50; back2 + sight
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for backsight

  • "Come quick," he shouted, adjusting the backsight of a rifle.

  • The tiny figures seen over the slide of the backsight seemed a little larger, but also fewer at each successive volley.

    The River War|Winston S. Churchill

British Dictionary definitions for backsight

backsight
/ (ˈbækˌsaɪt) /

noun

the sight of a rifle nearer the stock
surveying a reading taken looking backwards to a previously occupied stationCompare foresight (def. 4)
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