Dead reckoning Meaning, Definition & Usage
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noun an estimate based on little or no information
guesswork; guess; shot; guessing.
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noun navigation without the aid of celestial observations
WordNet
Definitions
(Naut.) , the method of determining the place of a ship from a record kept of the courses sailed as given by compass, and the distance made on each course as found by log, with allowance for leeway, etc., without the aid of celestial observations.
