lodestar
noun/ˈləʊdstɑː(r)/
/ˈləʊdstɑːr/
- the Pole Star (= a star that is used by sailors to guide a ship)
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- (formal) a person or principle that guides somebody’s behaviour or actions
Word OriginMiddle English: from lode in the obsolete sense ‘way, course’ + star.
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lodestar