English
Etymology
From the back + sight
Noun
en-noun
- The rear sight of a firearm.
- surveying A measurement or reading taken back towards a point of known elevation, used to calculate the height of the theodolite.
- surveying A measurement of a previously shot point, used to set the angle to zero when occupying a new position.
Verb
en-verb
- surveying To shoot a backsight.
See also
foresight
hindsight
ru:backsight
vi:backsight
zh:backsight
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