Definition of lodestar in English:

lodestar

noun

  • A star that is used to guide the course of a ship, especially the pole star:

    figurative ‘she dominated his existence as chief muse and intellectual lodestar’
    guide, guiding star, guiding light, role model, model, luminary, exemplar, ideal, inspiration
    criterion, aim, guiding principle, standard, pattern
    View synonyms

Origin

Middle English: from lode in the obsolete sense way, course + star.

Pronunciation:

lodestar

/ˈləʊdstɑː/