backstaff

Other Definitions
backstaff (enc)

An instrument formerly used for taking the altitude of the heavenly bodies, but now superseded by the quadrant and sextant; - so called because the observer turned his back to the body observed.

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backpiece
backplate
backrack
backrest
backroom
backroom boy
backs
backsaw
backscatter
backscratcher
backseat

backseat driver
backset
backsettler
backsheesh
backsight
backslap
backslapper
backslide
backslider
backsliding
backspace

backspace character
backspace key
backspacer
backspin
backstage
backstair
backstairs
backstay
backster
backstitch
backstop

backstress
backstroke
backstroker
backswept
backswimmer
backsword
backtalk
backtrack
backup
backup file
backup man